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Results: 1-25/49
Authors:
Yasuda, S
Fukushima, K
Kakehi, A
Citation: S. Yasuda et al., Formation and chemical structures of acid-soluble lignin I: sulfuric acid treatment time and acid-soluble lignin content of hardwood, J WOOD SCI, 47(1), 2001, pp. 69-72
Authors:
Akiyama, H
Fujimoto, T
Ohshima, K
Hoshino, K
Saito, Y
Okamoto, A
Yamamoto, I
Kakehi, A
Iriye, R
Citation: H. Akiyama et al., Stereoselective synthesis of medium-sized cyclic compounds by means of tandem reactions of a cyclic oxosulfonium ylide with acetates of Baylis-Hillman adducts, EUR J ORG C, (12), 2001, pp. 2265-2272
Authors:
Matsumoto, K
Toda, M
Hayashi, N
Kim, JC
Kakehi, A
Citation: K. Matsumoto et al., Conformational stability of 2,2 '-dialkoxybenzpinacols in solid state, SUPRAMOL CH, 13(1), 2001, pp. 79-92
Authors:
Matsumoto, K
Uchida, T
Toda, M
Hayashi, N
Ikemi, Y
Aoyama, K
Kakehi, A
Citation: K. Matsumoto et al., Comparative X-ray diffraction studies and molecular orbital calculations on diazinium dicyanomethylides, SUPRAMOL CH, 13(1), 2001, pp. 93-102
Authors:
Suga, H
Shi, XL
Ibata, T
Kakehi, A
Citation: H. Suga et al., Regioselectivity in formal [3+2] cycloaddition reaction of 5-alkoxyoxazoles with diethyl oxomalonate and 2,3-dichloro-5,6-dicyano-1,4-benzoquinone, HETEROCYCLE, 55(9), 2001, pp. 1711
Authors:
Konakahara, T
Ogawa, R
Tamura, S
Kakehi, A
Sakai, N
Citation: T. Konakahara et al., A novel synthesis of 3-nitropyridine derivatives from N-silyl-1-azaallylanions, HETEROCYCLE, 55(9), 2001, pp. 1737
Authors:
Abe, N
Fujii, H
Kakehi, A
Citation: N. Abe et al., Reaction of 2-chloro-1-azaazulene with diphenylcyclopropenone; Dimerization of the cycloadduct attended by cine-substitution and rearrangement, HETEROCYCLE, 55(6), 2001, pp. 1189-1194
Authors:
Konakahara, T
Sugama, N
Yamada, A
Kakehi, A
Sakai, N
Citation: T. Konakahara et al., Cyclization reaction of N-silyl-1-azaallyl anions with Michael acceptors as a new synthetic method of 2,3,5,6-tetra- and 2,3,6-trisubstituted pyridines, HETEROCYCLE, 55(2), 2001, pp. 313-322
Authors:
Matsumoto, K
Tanaka, N
Uchida, T
Ikemi, Y
Hayashi, N
Aoyama, K
Kakehi, A
Citation: K. Matsumoto et al., 1,3-dipolar cycloaddition of 1-phenylpropa-1, 2-diene with pyridinium dicyanomethylides : 1-phenylpropa-1, 2-diene as a synthetic equivalent of 1-phenylpropyne, HETEROCYCLE, 54(2), 2001, pp. 611
Authors:
Kakehi, A
Ito, S
Suga, H
Yasuraoka, K
Citation: A. Kakehi et al., Preparation of new nitrogen-bridged heterocycles. 50. Syntheses of some heterocyclic compounds starting from pyridinium 1-(ethoxycarbonylacetyl)methylides, HETEROCYCLE, 54(1), 2001, pp. 185-200
Authors:
Ito, S
Kakehi, A
Okada, K
Shibazaki, I
Citation: S. Ito et al., Thermolysis of ethoxycarbonyl[2-phenyl-2-(phenylsulfonylhydrazono)ethyl]methylenetriphenylphosphoranes formation of substituted pyridazinones, HETEROCYCLE, 54(1), 2001, pp. 237-248
Authors:
Abe, N
Nabeshima, M
Fujii, H
Kakehi, A
Kageura, Y
Konakahara, T
Citation: N. Abe et al., Reductive cyclization of 8-(2-nitrophenyl)-1-azaazulene derivatives; Formation of 6a,7-diazanaphth[3,2,1-c d]azulene and 7H-1,7-diazaindeno[1,2-e]azulene systems, a new DNA intercalater, HETEROCYCLE, 54(1), 2001, pp. 329-339
Authors:
Kamimura, A
Kawahara, F
Omata, Y
Murakami, N
Morita, R
Otake, H
Mitsudera, H
Shirai, M
Kakehi, A
Citation: A. Kamimura et al., Regioselective conjugate addition of thiols to unsymmetric fumaric esters in the presence of a lithium cation, TETRAHEDR L, 42(48), 2001, pp. 8497-8500
Authors:
Nagao, T
Suenaga, T
Ichihashi, T
Fujimoto, T
Yamamoto, I
Kakehi, A
Iriye, R
Citation: T. Nagao et al., Diastereoselective tandem Michael-intramolecular Wittig reactions of a cyclic phosphonium ylide with 8-phenylmenthyl enoates, J ORG CHEM, 66(3), 2001, pp. 890-893
Authors:
Matsumoto, K
Taketsuna, H
Kim, JC
Kakehi, A
Citation: K. Matsumoto et al., Inverse-electron demand [(pi)2+(sigma)2+(sigma)2] cycloaddition reaction of dimethyl oxaquadricyclane-2,3-dicarboxylate with cyclooctyne, J HETERO CH, 38(5), 2001, pp. 1233-1236
Authors:
Suga, H
Kakehi, A
Ito, S
Inoue, K
Ishida, H
Ibata, T
Citation: H. Suga et al., Stereocontrol in a ytterbium triflate-catalyzed 1,3-dipolar cycloaddition reaction of carbonyl ylide with N-substituted maleimides and dimethyl fumarate, B CHEM S J, 74(6), 2001, pp. 1115-1121
Authors:
Noguchi, M
Okada, H
Tanaka, M
Matsumoto, S
Kakehi, A
Yamamoto, H
Citation: M. Noguchi et al., Mechanistic considerations on the oxime-nitrone isomerization and intramolecular cycloaddition reaction of 3-(alk-2-enylamino)propionaldehyde grimes, B CHEM S J, 74(5), 2001, pp. 917-925
Authors:
Kakehi, A
Ito, S
Suga, H
Sakurai, S
Kobayashi, T
Citation: A. Kakehi et al., Preparation of new nitrogen-bridged heterocycles. 51. Syntheses and structures of compounds having two indolizine nuclei in a molecule, CHEM PHARM, 49(11), 2001, pp. 1401-1405
Authors:
Suga, H
Kakehi, A
Ito, S
Inoue, K
Ishida, H
Ibata, T
Citation: H. Suga et al., Stereocontrol in rare earth metal triflate-catalyzed 1,3-dipolar cycloaddition reaction of 2-benzopyrylium-4-olate with aldehydes, ORG LETT, 2(20), 2000, pp. 3145-3148
Authors:
Kamimura, A
Omata, Y
Mitsudera, H
Kakehi, A
Citation: A. Kamimura et al., A simple preparation of syn-NH-amide aldols and amide-Baylis-Hillman adducts via a Michael-aldol tandem process, J CHEM S P1, (24), 2000, pp. 4499-4504
Authors:
Noguchi, M
Yamada, H
Takamura, S
Uchida, T
Hironaka, M
Kakehi, A
Yamamoto, H
Citation: M. Noguchi et al., Stereoselective azepine-ring formation through ene reactions of 3-(alk-2-enyl)amino-2-cyanoacrolein derivatives, EUR J ORG C, (8), 2000, pp. 1489-1496
Authors:
Matsumoto, K
Goto, S
Toda, M
Kakehi, A
Citation: K. Matsumoto et al., An extremely unusual reaction of 2,3,4-triphenyl-3-azabicyclo[3.2.0]hepta-1,4-diene with dimethyl acetylenedicarboxylate, HETEROCYC C, 6(3), 2000, pp. 245-248
Authors:
Uddin, MJ
Fujimoto, T
Kakehi, A
Shirai, H
Yamamoto, I
Citation: Mj. Uddin et al., Diastereoselective synthesis of bridgehead heterobicyclic spiro compounds derived from tandem Michael intramolecular 1,3-dipolar cycloaddition of nitrones, HETEROCYC C, 6(2), 2000, pp. 113-118
Authors:
Abe, N
Odagiri, K
Fujii, H
Kakehi, A
Citation: N. Abe et al., Synthesis and some reactions of 1,8-diamino-1-azaazulenium salts, HETEROCYCLE, 53(2), 2000, pp. 323
Authors:
Abe, N
Matsuda, H
Fujii, H
Kakehi, A
Citation: N. Abe et al., Reaction of 2-hydrazino-1-azaazulene with diphenylnitrone: Unexpected, formation of phenylimino-p-benzoquinone-N-oxide, HETEROCYCLE, 53(2), 2000, pp. 353