公开(公告)号：DE50011721D1

公开(公告)日：2006-01-05

申请号：DE50011721

申请日：2000-04-06

Applicant: BASF AG

Inventor： SLANY DR ,  SCHULZ DR ,  SCHAEFER DR ,  ZELLER DR ,  EBEL DR

IPC: C07D263/08 ,  C07D233/76 ,  C07D263/44

Abstract: Preparation of hydantoins or aminoacid cyclic anhydrides (I) involves reacting an aldehyde (II) with carbon monoxide and a u or carbamate compound (III) in presence of a transition metal catalyst. Preparation of hydantoins or aminoacid cyclic anhydrides of formula (I) involves reacting an aldehyde RCHO (II) with carbon monoxide and a urea or carbamate compound of formula R3-NH-C(O)-R2 (III) in presence of a transition metal catalyst. X = O or NH; R = alkyl or aryl (both optionally substituted); R3 = H or as defined for R; R2 = group which reacts with the COOH group formed in the reaction under ring-closure to form (I).