Organocatalytic enantioselective aza-Friedel–Crafts reaction between benzothiazolimines and 2-naphthols for the preparation of chiral 2′-aminobenzothiazolomethyl naphthols
作者:Chen-Yi Li、Min Xiang、Jian Zhang、Wen-Sheng Li、Ying Zou、Fang Tian、Li-Xin Wang
DOI:10.1039/d1ob01443a
日期:——
developed, and a series of chiral 2′-aminobenzothiazolomethyl naphthols with potential antiproliferative and anthelminticactivities have been successfully and effectively prepared in good to excellent yields (up to 98%) with excellent enantioselectivities (up to >99% ee) even in a scale-up preparation under mild conditions.
A simple and practical method for the construction of 1,3,5-trisubstituted imidazolidine derivatives via [3 + 2] cycloadditionreaction has been developed. This reaction could smoothly proceed between nonstabilized azomethine ylides generated in situ and 2-benzothiazolamines to deliver a wide scope of differently substituted imidazolidines in high yields (up to 98%). The structure of one example was
Asymmetric Mannich/Cyclization Reaction of 2-Benzothiazolimines and 2-Isothiocyano-1-indanones to Construct Chiral Spirocyclic Compounds
作者:Yao Zheng、Da-Ming Du
DOI:10.3390/molecules29132958
日期:——
efficient and practical organocatalyzed asymmetric Mannich/cyclizationtandem reaction strategy of 2-benzothiazolimines and 2-isothiocyanato-1-indanones was developed, and novel spirocyclic compounds containing benzothiazolimine and indanone scaffolds were obtained. This chiral thiourea-catalyzed Mannich/cyclizationtandem reaction offers chiral spirocyclic compounds with continuous tertiary and quaternary