Synthesis of 7,7′-Dihydroxy-8,8′-biquinolyl (azaBINOL) via Pd-Catalyzed Directed Double C–H Functionalization of 8,8′-Biquinolyl: Emergence of an Atropos from a Tropos State
摘要:
7,7'-Dihydroxy-8,8'-biquinolyl(azaBINOL) was prepared from 2-chloroaniline in four steps: (1) the Skraup reaction, (2) Ni-catalyzed reductive coupling of 8-chloroquinoline, (3) Pd(II)-catalyzed double C-H functionalization of 8,8'-biquinolyl mediated by Phl(OAc)(2), and (4) saponification. During the third step, an axially chiral (atropos type) biaryl molecule was directly generated from an essentially achiral (tropos type) biaryl starting material.
Synthesis of 7,7′-Dihydroxy-8,8′-biquinolyl (azaBINOL) via Pd-Catalyzed Directed Double C–H Functionalization of 8,8′-Biquinolyl: Emergence of an Atropos from a Tropos State
摘要:
7,7'-Dihydroxy-8,8'-biquinolyl(azaBINOL) was prepared from 2-chloroaniline in four steps: (1) the Skraup reaction, (2) Ni-catalyzed reductive coupling of 8-chloroquinoline, (3) Pd(II)-catalyzed double C-H functionalization of 8,8'-biquinolyl mediated by Phl(OAc)(2), and (4) saponification. During the third step, an axially chiral (atropos type) biaryl molecule was directly generated from an essentially achiral (tropos type) biaryl starting material.