Novel Synthesis of Benzothiazole Derivatives via Directed Lithiation and Aryne-Mediated Cyclization Followed by Quenching with Electrophiles
摘要:
A series of benzothiazole derivatives selectively functionalized at position 7 was synthesized in the course of the following one-pot reaction sequence: directed lithiation of 2,2-dimethyl-N-(3-halophenyl)propanethioamides (1, 2) or N-(3-halophenyl)-tert-butylthionocarbamates (15-17), cyclization of the aryne intermediate, and quenching of the resulting aryllithium with selected electrophiles.
Novel Synthesis of Benzothiazole Derivatives via Directed Lithiation and Aryne-Mediated Cyclization Followed by Quenching with Electrophiles
摘要:
A series of benzothiazole derivatives selectively functionalized at position 7 was synthesized in the course of the following one-pot reaction sequence: directed lithiation of 2,2-dimethyl-N-(3-halophenyl)propanethioamides (1, 2) or N-(3-halophenyl)-tert-butylthionocarbamates (15-17), cyclization of the aryne intermediate, and quenching of the resulting aryllithium with selected electrophiles.
Novel Synthesis of Benzothiazole Derivatives <i>via</i> Directed Lithiation and Aryne-Mediated Cyclization Followed by Quenching with Electrophiles
作者:Peter Stanetty、Barbara Krumpak
DOI:10.1021/jo960203z
日期:1996.1.1
A series of benzothiazole derivatives selectively functionalized at position 7 was synthesized in the course of the following one-pot reaction sequence: directed lithiation of 2,2-dimethyl-N-(3-halophenyl)propanethioamides (1, 2) or N-(3-halophenyl)-tert-butylthionocarbamates (15-17), cyclization of the aryne intermediate, and quenching of the resulting aryllithium with selected electrophiles.