Directed ortho metalation - suzuki cross coupling connections. Convenient regiospecific routes to functionalized m- and p-teraryls and m-quinquearyls
摘要:
Rapid access to a variety of substituted m- and p- teraryls and m- quinquearyls (Table) via Pd-catalyzed, one-pot, sequential and 1:2 cross coupling of aryl halides with aryl boronic acids, both available by metal-halogen exchange or directed ortho metalation tactics, is described.
Dilithiated synthons of tertiary benzamides, phthalamides, and 0,0′-aryl dicarbamates
作者:R.J. Mills、R.F. Horvath、M.P. Sibi、V. Snieckus
DOI:10.1016/s0040-4039(00)98418-1
日期:1985.1
Dilithiated species 1, 2, and 3, generated by metal-halogenexchange and directed ortho metalation, undergo reaction with electrophiles to afford, in high yield, polysubstituted aromatics 6, 7, and 8 respectively; 9 is formed via a bis anionic Fries rearrangement of 3.