Nucleophilic Addition of Lewis Acid Complexed α-Amino Carbanions to Arynes: Synthesis of 1-Aryl-N-methyl-1,2,3,4-tetrahydroisoquinolines
摘要:
The direct C-1 arylation of N-methyl-1,2,3,4-tetrahydroisoquinolines via coupling of alpha-amino carbanions derived from Lewis acid complexed tetrahydroisoquinolines and in situ generated arynes is described. This process provides an easy access to the title compounds and a new synthetic route to (+/-)-cryptostyline alkaloids.
Transition-Metal-Free Arylation of N-Alkyl-tetrahydroisoquinolines under Oxidative Conditions: A Convenient Synthesis of C1-Arylated Tetrahydroisoquinoline Alkaloids
Abstract A simple protocol for the C1 arylation of tetrahydroisoquinolines with aryl Grignard reagents via diethyl azodicarboxylate (DEAD) mediated oxidative C–H activation under metal-free conditions has been developed. The target compounds, including some naturally occurring alkaloids, were obtained in moderate to good yields. A simple protocol for the C1 arylation of tetrahydroisoquinolines with
The direct C-1 arylation of N-methyl-1,2,3,4-tetrahydroisoquinolines via coupling of alpha-amino carbanions derived from Lewis acid complexed tetrahydroisoquinolines and in situ generated arynes is described. This process provides an easy access to the title compounds and a new synthetic route to (+/-)-cryptostyline alkaloids.