Reactions of hydroxyglycines. New synthetic routes to 4-phenylquinazoline derivatives
作者:Anthonius J. Hoefnagel、Henk van Koningsveld、Frank van Meurs、Joop A. Peters、Anton Sinnema、Herman van Bekkum
DOI:10.1016/s0040-4020(01)80432-4
日期:1993.7
Reaction of hydroxyglycine with 2-aminobenzophenones gives 1,2-dihydro-4-phenyl-quinazoline-2-carboxylic acids in high yields and under mild conditions. These can be smoothly converted into the corresponding 3,4-dihydro isomers and into quinazoline derivatives via rearrangement and oxidation by air, respectively. The X-ray crystallographic structure of 6-chloro-1,2-dihydro-1-methyl-4-phenylquinazoline-2-carboxylic
羟基甘氨酸与2-氨基二苯甲酮的反应以高收率和在温和的条件下得到1,2-二氢-4-苯基-喹唑啉-2-羧酸。它们可以分别通过重排和通过空气氧化而平滑地转化为相应的3,4-二氢异构体和喹唑啉衍生物。6-氯-1,2-二氢-1-甲基-4-苯基喹唑啉-2-羧酸的X射线晶体结构显示C(2)处的羧酸根和N(1)处的甲基位于轴向位置。