A PROCESS FOR PREPARATION OF 3,4-DIMETHYLBENZALDEHYDE

申请公布号：WO2016071920(A2)

申请号：WO2015IN00392

申请日期：2015.10.16

申请公布日期：2016.05.12

申请人：

EXCEL INDUSTRIES LTD.

发明人：SHROFF, RAVI ASHWIN;VAISHNAV, UJVAL HEMANTKUMAR;PATIL, MAHESH LAXMIKANT;PILLAI, VIVEKANAND BHASKAR

分类号：C07C47/542

主分类号：C07C47/542

摘要：A novel process for preparation of 3,4-dimethylbenzaldehyde has been disclosed. The process is comprising steps of (i) reacting 4- bromo-o-xylene with magnesium metal to obtain Grignard compound of formula 1; (ii) formylating the compound of formula 1 by reaction with N,N-dimethylformamide to form compound of formula 2; (iii) treating compound of formula 2 with aqueous HC1 to obtain 3,4- dimethylbenzaldehyde.

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