1,2-1,4 addition reaction sequence leading to disubstituted acelylenes
申请人:McNeilab, Inc.
公开号:US04772755A1
公开(公告)日:1988-09-20
A method for synthesizing a tri-substituted phenyl compound (I) by using a 1,2-addition followed by a 1,4-addition to 1,4-benzoquinone (II): ##STR1## wherein X is hydroxy, alkoxy or alkanoyloxy, Ar.sup.1 is an organic group and R is an unsubstituted or substituted alkyl group.
Effland, Richard C.; Davis, Larry; Kapples, Kevin J., Journal of Heterocyclic Chemistry, 1990, vol. 27, # 4, p. 1015 - 1019
作者:Effland, Richard C.、Davis, Larry、Kapples, Kevin J.、Olsen, Gordon E.
DOI:——
日期:——
Synthesis of hydrogenated indazole derivatives starting with α,β-unsaturated ketones and hydrazine derivatives
作者:Azadeh Nakhai、Jan Bergman
DOI:10.1016/j.tet.2009.01.041
日期:2009.3
The reaction of hydrazine derivatives with alpha,beta-unsaturated ketones, such as cyclohexenyl(phenyl) methanone and (E)-2-benzylidenecyclohexanone, were investigated.The reaction between methylhydrazine and e.g., cyclohexenyl(phenyl)methanone was particularly interesting as 3a,4,5,6,7,7a-hexahydro-1-methyl-3-phenyl-1H-indazole was obtained as the major product together with 4,5,6,7-tetrahydro-2-methyl-3-phenyl-2H-indazole as a minor product. (C) 2009 Elsevier Ltd. All rights reserved.
Gautier,J.-A. et al., Bulletin de la Societe Chimique de France, 1969, p. 4356 - 4361