Directed <i>ortho</i> Metalation-Based Methodology. Halo-, Nitroso-, and Boro-Induced <i>ipso-</i>Desilylation. Link to an <i>in situ</i> Suzuki Reaction
作者:Zhongdong Zhao、Victor Snieckus
DOI:10.1021/ol0506563
日期:2005.6.1
[reaction: see text] Treatment of DoM-derived silylated aromatics 2-4 under standard electrophilic halogenation conditions cleanly affords ipso-desilyation products 5-7, while nitration of methoxy-substituted analogues 8, 9 leads to non-ipso isomers 10, 12 and 11, 13, controlled by a silicon steric effect. Sequential ipso-borodesilylation of 2a, 3a, and 20 followed by treatment with aryl halides under
Ortho-amination of lithiated tertiary benzamides. Short route to polysubstituted anthranilamides
作者:J.N. Reed、V. Snieckus
DOI:10.1016/s0040-4039(00)94277-1
日期:1983.1
Directedlithiation of benzamides (1), phenyloxazoline (4a), methoxymethoxybenzene (4b), and -phenyl carbamate (4c) followed by sequential treatment with TsN3 and NaBH4 constitutes a general route to synthetically useful amino aromatics 3 and 5.