| 摘要 |
PCT No. PCT/FR98/00289 Sec. 371 Date Aug. 5, 1999 Sec. 102(e) Date Aug. 5, 1999 PCT Filed Feb. 16, 1998 PCT Pub. No. WO98/37059 PCT Pub. Date Aug. 27, 1998The invention relates to a preparation process for 4-cyano-4'-hydroxybiphenyl, the process comprising the protection of the aldehyde function of 4-bromo-benzaldehyde, the reaction of the protected 4-bromo-benzaldehyde with p-alkoxyphenyl magnesium halide, the deprotection of the formyl radical of the protected 4-alkoxy-4'-formyl-biphenyl and conversion of the formyl group into cyano and hydrolysis of the alkoxy group of the resulting 4-alkoxy 4'-cyano-biphenyl. |
