Regiodivergent cascade cyclization/alkoxylation of allenamides <i>via</i> N-protecting group driven rearrangement to access indole and indoline derivatives
作者:Dhananjay Chaudhary、Suman Yadav、Naveen Kumar Maurya、Dharmendra Kumar、Km Ishu、Malleswara Rao Kuram
DOI:10.1039/d2cc03174d
日期:——
tethered allenamides is described, providing regiodivergent indole and indoline derivatives controlled by the N-protecting group. This room temperature reaction provided a functionalizable olefinic moiety with broad substrate scope. Preliminary mechanistic studies support the rearrangement of an indoline-derived intermediate to indoles with the N-acetyl allenamides forming free (NH) indoles.
DIVAKAR K. I.; KULKARNI B. D.; RAO A. S., INDIAN J. CHEM., 1977, B 15, NO 9, 849-850
作者:DIVAKAR K. I.、 KULKARNI B. D.、 RAO A. S.
DOI:——
日期:——
Expeditious synthesis of 2,3-dihydro-2-alkoxy-3-methylenebenzofurans from N-benzofuran-3-ylmethyl N,N,N-trialkylammonium bromides: a new approach to access the natural product, 2-hydroxy-3-methylene-6-methyl-2, 3-dihydrobenzofuran
作者:Yuanxiang Wang、Ao Zhang
DOI:10.1016/j.tet.2009.06.049
日期:2009.8
A highly efficient strategy was developed to construct a natural product-based library of 2-alkoxy-3-methylene-2,3-dihydrobenzofurans from N-benzofuran-3-ylmethyl N,N,N-trialkylammonium bromides.