4-Aryl-2,3-dihydro-4H-pyrimido[2,3-b]benzothiazoles (4-Ar-DHPBs) were synthesized and their catalytic activity and selectivity in kinetic resolution of a secondary alcohol as well as in the Steglich rearrangement and related reactions were evaluated. 4-Aryl-DHPBs showed low enantioselectivity in the acylative kinetic resolution of 1-phenylethanol. Conversely, they catalyzed the Steglich rearrangement
合成了4-Aryl-2,3-dihydro-4 H -pyrimido [2,3- b ]
苯并噻唑(4-Ar-
DHPBs),它们在仲醇动力学和Steglich动力学拆分中具有催化活性和选择性重排和相关反应进行了评估。4-芳基-
DHPB在1-苯基
乙醇的酰基动力学拆分中显示出低的对映选择性。相反,他们以适中至优异的对映选择性催化了Steglich重排,证明了通过在
DHPB的4位上引入取代基进行远程立体控制的可能性。