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51

Direct attack on the sulfur atom of phosphinodithioate esters by organometalloids

Koshiro Goda, Renji Okazaki, Kin-ya Akiba, Naoki Inamoto

Journal:

Tetrahedron Letters

Year:

1976

Language:

english

File:

PDF, 206 KB

english, 1976

52

Restricted rotation of pyrimidine ring in symmetrical 10-S-3 sulfuranes: Evaluation of hypervalent NSN bond energy

Katsuo Ohkata, Minoru Ohsugi, Tetsuo Kuwaki, Kazuhiro Yamamoto, Kin-ya Akiba

Journal:

Tetrahedron Letters

Year:

1990

Language:

english

File:

PDF, 225 KB

english, 1990

53

Highly asymmetric induction in the Diels-Alder reaction of 3-alkoxycarbonyl-substituted coumarin

Katsuo Ohkata, Keiko Miyamoto, Shuji Matsumura, Kin-ya Akiba

Journal:

Tetrahedron Letters

Year:

1993

Language:

english

File:

PDF, 270 KB

english, 1993

54

Characterization of an optically active pentacoordinate phosphorane with asymmetry only at phosphorus

Satoshi Kojima, Kazumasa Kajiyama, Kin-ya Akiba

Journal:

Tetrahedron Letters

Year:

1994

Language:

english

File:

PDF, 336 KB

english, 1994

55

Non-dissociative permutation of a stable hydrophosphorane and retention of stereochemistry of the electrophilic reaction of its conjugate phosphoranide base

Satoshi Kojima, Masaaki Nakamoto, Kazumasa Kajiyama, Kin-ya Akiba

Journal:

Tetrahedron Letters

Year:

1995

Language:

english

File:

PDF, 228 KB

english, 1995

56

Synthesis and characterization of intra- and intermolecular hydrogen bonding isomers of PH (apical) phosphoranes bearing a hydroxyl group and their thermal cyclization

Kazumasa Kajiyama, Satoshi Kojima, Kin-ya Akiba

Journal:

Tetrahedron Letters

Year:

1996

Language:

english

File:

PDF, 236 KB

english, 1996

57

Discovery of hexacoordinate hypervalent carbon compounds: Density functional study

Yasuaki Kikuchi, Motoki Ishii, Kin-ya Akiba, Hiromi Nakai

Journal:

Chemical Physics Letters

Year:

2008

Language:

english

File:

PDF, 660 KB

english, 2008

58

The chemistry of Group 15 element porphyrins bearing element–carbon bonds: synthesis and properties

Yohsuke Yamamoto, Kin-ya Akiba

Journal:

Journal of Organometallic Chemistry

Year:

2000

Language:

english

File:

PDF, 251 KB

english, 2000

59

Stereomutation and apicophilicity of diastereomeric spirophosphoranes (10-P-5)

Masaaki Nakamoto, Satoshi Kojima, Shiro Matsukawa, Yohsuke Yamamoto, Kin-ya Akiba

Journal:

Journal of Organometallic Chemistry

Year:

2002

Language:

english

File:

PDF, 273 KB

english, 2002

60

Stereospecific stilbene formation from β-hydroxy-α,β-diphenylethylphosphoranes. Mechanistic proposals based upon stereochemistry

Satoshi Kojima, Kazuhiro Kawaguchi, Shiro Matsukawa, Kin-ya Akiba

Journal:

Year:

2003

Language:

english

File:

PDF, 472 KB

english, 2003

61

Lewis acid-catalyzed [4+2]type cycloadditions of aldimines bearing α-hydrogens with 2-silyloxy-1,3-butadienes

Kaori Ishimaru, Yohsuke Yamamoto, Kin-ya Akiba

Journal:

Year:

1997

Language:

english

File:

PDF, 525 KB

english, 1997

62

Synthesis and characterization of hexaaryltellurium (TeAr6); the first neutral hexaarylated element compound

Mao Minoura, Takao Sagami, Masataka Miyasato, Kin-ya Akiba

Journal:

Year:

1997

Language:

english

File:

PDF, 473 KB

english, 1997

63

Novel cationic titanium(IV) Lewis acids and their use in asymmetric aldol reactions

Kaori Ishimaru, Keiji Monda, Yohsuke Yamamoto, Kin-ya Akiba

Journal:

Year:

1998

Language:

english

File:

PDF, 483 KB

english, 1998

64

Synthesis, structure, and reactions of 10-Bi-4 organobismuth ate complexes

Xiang Chen, Yohsuke Yamamoto, Kin-ya Akiba, Satoshi Yoshida, Masanori Yasui, Fujiko Iwasaki

Journal:

Tetrahedron Letters

Year:

1992

Language:

english

File:

PDF, 250 KB

english, 1992

65

1,3-dipolar cycloaddition of “Hector's base” with arylcyanamides

Kin-ya Akiba, Tohru Tsuchiya, Masahide Ochiumi, Naoki Inamoto

Journal:

Tetrahedron Letters

Year:

1975

Language:

english

File:

PDF, 165 KB

english, 1975

66

Formation of 2-arylaminothiazoles by 1,3-dipolar cycloaddition of “Hector's base” with acetylenes.

Kin-ya Akiba, Masahide Ochiumi, Tohru Tsuchiya, Naoki Inamoto

Journal:

Tetrahedron Letters

Year:

1975

Language:

english

File:

PDF, 147 KB

english, 1975

67

Formation of bis[o-(N-substituted cyanamino)phenyl] disulfides by photolysis of 3-substituted 2-nitrosoimino-2, 3-dihydrobenzothiazoles

Kin-ya Akiba, Isaburo Fukawa, Kentaro Mashita, Naoki Inamoto

Journal:

Tetrahedron Letters

Year:

1968

Language:

english

File:

PDF, 177 KB

english, 1968

68

One-pot synthesis of γ-butyrolactones and 4,5-dihydrofurans from α-chloro-α-ketosulfides and olefins

Makoto Wada, Takahide Shigehisa, Hiroaki Kitani, Kin-ya Akiba

Journal:

Tetrahedron Letters

Year:

1983

Language:

english

File:

PDF, 208 KB

english, 1983

69

Chemoselective reaction of allylsilanes with α-chlorosulfides containing a carbonyl group

Makoto Wada, Takahide Shigehisa, Kin-ya Akiba

Journal:

Tetrahedron Letters

Year:

1983

Language:

english

File:

PDF, 216 KB

english, 1983

70

Synthesis of 3-aryl- or 3-alkenyl-4,6-dimethyl-2-pyrones by silver ion promoted rearrangement of 4-aryl- or4-alkenyl-3-bromo-4,6-dimethyl-3,4-dihydro-2-pyrones

Takashi Kume, Hideharu Iwasaki, Yohsuke Yamamoto, Kin-ya Akiba

Journal:

Tetrahedron Letters

Year:

1988

Language:

english

File:

PDF, 244 KB

english, 1988

71

Synthesis and halogenolysis of stable pentacoordinate bismuthcompounds (10-Bi-5): formation of1-chloro-1,1-diaryl-3,3-bis(trifluoromethyl)-3H-2,1-benzoxabismoles

Kin-ya Akiba, Keisuke Ohdoi, Yohsuke Yamamoto

Journal:

Tetrahedron Letters

Year:

1988

Language:

english

File:

PDF, 250 KB

english, 1988

72

Transannular bond formation between the antimony and the nitrogen atoms in dibenz[c,f][1,5]azastibocine system. Formation of XSbX and XSbN+ hypervalent bond

Katsuo Ohkata, Masako Ohnishi, Kin-ya Akiba

Journal:

Tetrahedron Letters

Year:

1988

Language:

english

File:

PDF, 251 KB

english, 1988

73

Base induced skeletal rearrangements via spirocyclic ipso intermediates in dibenzodithiocinium salts

Katsuo Ohkata, Keiji Okada, Kohji Maruyama, Kin-ya Akiba

Journal:

Tetrahedron Letters

Year:

1986

Language:

english

File:

PDF, 228 KB

english, 1986

74

Carbon—carbon bond formation with bismuth salt. A chemoselective Grignard-type addition of allyl unit to aldehydes

Makoto Wada, Hidenori Ohki, Kin-ya Akiba

Journal:

Tetrahedron Letters

Year:

1986

Language:

english

File:

PDF, 249 KB

english, 1986

75

Formation of ammoniophosphoranes by transannular interaction in dibenz[c,f][1,5]azaphosphocine system

Kin-ya Akiba, Keiji Okada, Katsuo Ohkata

Journal:

Tetrahedron Letters

Year:

1986

Language:

english

File:

PDF, 271 KB

english, 1986

76

Formation of 2-oxa-8,9-diazabicyclo[3.3.1]nona-3,6-diene derivatives from pyrimidine: Utility for tetrahydropyrimidine synthesis

Kin-ya Akiba, Akira Sakaguchi, Yobsuke Yamamoto

Journal:

Tetrahedron Letters

Year:

1986

Language:

english

File:

PDF, 110 KB

english, 1986

77

Regioselective synthesis of 4-alkylpyridines via 1,4-dihydropyridine derivatives from pyridine

Kin-ya Akiba, Yuji Iseki, Makoto Wada

Journal:

Tetrahedron Letters

Year:

1982

Language:

english

File:

PDF, 282 KB

english, 1982

78

Regioselective synthesis of 4-alkylquinolines from quinoline via 1-ethoxycarbonyl-1, 2-dihydroquinoline-2-phosphonates

Kin-ya Akiba, Tetsuji Kasai, Makoto Wada

Journal:

Tetrahedron Letters

Year:

1982

Language:

english

File:

PDF, 238 KB

english, 1982

79

Facile synthesis of 4-substituted pyridines using grignard reagents

Kin-ya Akiba, Yuji Iseki, Makoto Wada

Journal:

Tetrahedron Letters

Year:

1982

Language:

english

File:

PDF, 140 KB

english, 1982

80

Regioselective synthesis of 4-(2-oxoalkyl)pyridines via 1,4-dihydro-pyridine derivatives using silyl enol ethers and pyridinium salts

Kin-ya Akiba, Yoshihiro Nishihara, Makoto Wada

Journal:

Tetrahedron Letters

Year:

1983

Language:

english

File:

PDF, 241 KB

english, 1983

81

Distinct difference of chemical behaviors between 5H,7H-dibenzo[b,g][1,5]dithiocin 12-oxide and thiazocine S-oxide

Katsuo Ohkata, Keiji Okada, Kin-ya Akiba

Journal:

Tetrahedron Letters

Year:

1985

Language:

english

File:

PDF, 218 KB

english, 1985

82

Cycloaddition-elimination reactions of iminothiadiazolines with acetylenes: hypervalent sulfur intermediates

Kin-ya Akiba, Tohru Tsuchiya, Naoki Inamoto

Journal:

Tetrahedron Letters

Year:

1976

Language:

english

File:

PDF, 114 KB

english, 1976

83

Synthesis of 1,4-benzodithiafulvenes via wittig reaction

Kiyofumi Ishikawa, Kin-ya Akiba, Naoki Inamoto

Journal:

Tetrahedron Letters

Year:

1976

Language:

english

File:

PDF, 205 KB

english, 1976

84

Decelerated methyl transfer from δ-ammoniomethylsulfurane compared with the corresponding methylsulfonium salts

Katsuo Ohkata, Kohichi Takee, Kin-ya Akiba

Journal:

Tetrahedron Letters

Year:

1983

Language:

english

File:

PDF, 233 KB

english, 1983

85

Synthesis of γ-butyrolactones via the ene reaction of ethyl α-chloro-α-phenylthioacetate and 1-alkenes

Kin-ya Akiba, Yasuhito Takasu, Makoto Wada

Journal:

Tetrahedron Letters

Year:

1985

Language:

english

File:

PDF, 222 KB

english, 1985

86

First example of thermally stable hypervalent bismuth ate complex (12-Bi-6) with two bidentate ligands: Synthesis and structure

Kin-ya Akiba, Keisuke Ohdoi, Yohsuke Yamamoto

Journal:

Tetrahedron Letters

Year:

1989

Language:

english

File:

PDF, 272 KB

english, 1989

87

Debromination of phenacyl and benzylic bromides with tertiary stibine and the mechanistic consideration

Kin-ya Akiba, Akiyoshi Shimizu, Hideyuki Ohnari, Katsuo Ohkata

Journal:

Tetrahedron Letters

Year:

1985

Language:

english

File:

PDF, 253 KB

english, 1985

88

A facile synthesis of (±)-sesbanine via γ-addition of ketene silyl acetal with quaternized methyl nicotinate

Makoto Wada, Yoshihiro Nishihara, Kin-ya Akiba

Journal:

Tetrahedron Letters

Year:

1985

Language:

english

File:

PDF, 258 KB

english, 1985

89

A new synthesis of medium-membered lactones via intramolecular condensation of α(-chlorosulfides containing an ester group and allylsilanyl moiety

Makoto Wada, Takahide Shigehisa, Kin-ya Akiba

Journal:

Tetrahedron Letters

Year:

1985

Language:

english

File:

PDF, 239 KB

english, 1985

90

Metallic bismuth mediated allylation of aldehydes to homoallylic alcohols

Makoto Wada, Kin-ya Akiba

Journal:

Tetrahedron Letters

Year:

1985

Language:

english

File:

PDF, 125 KB

english, 1985

91

Addition of boron trifluoride complexes of organocopper reagentsto aldimines containing α-hydrogens

Makoto Wada, Yōji Sakurai, Kin-ya Akiba

Journal:

Tetrahedron Letters

Year:

1984

Language:

english

File:

PDF, 239 KB

english, 1984

92

Addition of alkynyl anions to aldimines containing α-hydrogens: a novel synthesis of β-aminoacetylenes

Makoto Wada, Yōji Sakurai, Kin-ya Akiba

Journal:

Tetrahedron Letters

Year:

1984

Language:

english

File:

PDF, 137 KB

english, 1984

93

Intramolecular cyclization of o-silylbenzyl alcohols with elimination of hydrocarbon via hypervalent silicon intermediates: Effect of structure on the selectivity for elimination

Yohsuke Yamamoto, Yasuhiro Takeda, Kin-ya Akiba

Journal:

Tetrahedron Letters

Year:

1989

Language:

english

File:

PDF, 252 KB

english, 1989

94

Synthesis and chemical behaviors of 12-substituted dibenz[c,f][1,5]azastibocine and dibenz[c,f][1,5]azabismocine derivatives: evidences of 10-Pn-4 type hypervalent interaction

Katsuo Ohkata, Shin Takemoto, Masako Ohnishi, Kin-ya Akiba

Journal:

Tetrahedron Letters

Year:

1989

Language:

english

File:

PDF, 233 KB

english, 1989

95

Ring-transformation equilibrium with participation of π-bonded S in an isothiazole system. Synthesis of non-ring-transformed 5-(2-aminovinyl)isothiazole derivative via 1,3-silyl group shift

Katsuo Ohkata, Yoshihiko Ohyama, Yuko Watanabe, Kin-ya Akiba

Journal:

Tetrahedron Letters

Year:

1984

Language:

english

File:

PDF, 252 KB

english, 1984

96

Regiospecific introduction of alkyl groups into 4-position of pyridine novel synthesis of 4-substituted pyridines

Kin-ya Akiba, Hideto Matsuoka, Makoto Wada

Journal:

Tetrahedron Letters

Year:

1981

Language:

english

File:

PDF, 245 KB

english, 1981

97

The survival of tert-butyldimethylsilyl group of silyl enol ethers in the reaction with dimethyl(methylene)ammonium iodide. Regioselective synthesis of tert-butyldimethylsilyl enol ethers containing an amino group.

Makoto Wada, Yoshihiro Nishihara, Kin-ya Akiba

Journal:

Tetrahedron Letters

Year:

1984

Language:

english

File:

PDF, 258 KB

english, 1984

98

Regioselective addition of organocuprates to 2-siloxypyrylium salt: Facile synthesis of substituted 2-siloxy-4H-pyrans and their reactions with electrophiles

Takashi Kume, Hideharu Iwasaki, Yohsuke Yamamoto, Kin-ya Akiba

Journal:

Tetrahedron Letters

Year:

1987

Language:

english

File:

PDF, 259 KB

english, 1987

99

Reaction of 4-t-butyldimethylsiloxy-1-benzopyrylium salt with enol silyl ethers and active methylenes

Hideharu Iwasaki, Takashi Kume, Yohsuke Yamamoto, Kin-ya Akiba

Journal:

Tetrahedron Letters

Year:

1987

Language:

english

File:

PDF, 243 KB

english, 1987

100

Wittig-horner reaction of a phosphonate of reissert analogue a new method for introduction of alkyl groups into isoquinoline

Kin-ya Akiba, Yoshio Negishi, Katsuyuki Kurumaya, Noboru Ueyama, Naoki Inamoto

Journal:

Tetrahedron Letters

Year:

1981

Language:

english

File:

PDF, 215 KB

english, 1981

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