Preparation of 4-cyano-4'-hydroxybiphenyl

申请公布号：US6046352(A)

申请号：US19990355909

申请日期：1999.08.05

申请公布日期：2000.04.04

申请人：

SOCIETE D'EXPANSION SCIENTIFIQUE EXPANSIA

发明人：CAZAUX, JEAN-BERNARD;LE BRETON, CHRISTINE

分类号：C07C253/30;C07C253/00;C07C255/53;(IPC1-7):C07C253/14

主分类号：C07C253/30

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.

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