81235-65-6Relevant academic research and scientific papers
A new synthesis of indoles via intramolecular cyclization of ?-alkynyl N,N-dialkylanilines promoted by KOt-Bu/DMSO
Chen, Yan-Yan,Chen, Jia-Hua,Zhang, Niu-Niu,Ye, Lin-Miao,Zhang, Xue-Jing,Yan, Ming
, p. 478 - 481 (2015/03/05)
2-Aryl indoles could be prepared in excellent yields via the intramolecular cyclization of ?-alkynyl N,N-dialkylanilines. The reaction is efficiently promoted by the catalytic amount of KOt-Bu in DMSO at room temperature. A reaction mechanism involving α-
A new synthesis of indoles via intramolecular cyclization of ο-alkynyl N,N-dialkylanilines promoted by KOt-Bu/DMSO
Chen, Yan-Yan,Chen, Jia-Hua,Zhang, Niu-Niu,Ye, Lin-Miao,Zhang, Xue-Jing,Yan, Ming
, p. 478 - 481 (2015/04/27)
2-Aryl indoles could be prepared in excellent yields via the intramolecular cyclization of ο-alkynyl N,N-dialkylanilines. The reaction is efficiently promoted by the catalytic amount of KOt-Bu in DMSO at room temperature. A reaction mechanism involving α-
Reactions of Dimethyl Acetylenedicarboxylate with Indoles having Bulky 3-Substituents, and Further Reactions of Pyrroloindoles
Letcher, Roy M.,Choi, Michael C. K.,Wai, John S. M.
, p. 2629 - 2659 (2007/10/02)
The addition of dimethyl acetylenedicarboxylate to nine pyrroloindoles, and to nine N-methylindoles with bulky 3-substituents, has yielded twenty three new adducts.Their structures, elucidated mainly from spectroscopy which includes extensive diagnostic use of 13C-1H n.m.r. coupling constants, show several novel features, but all adducts are related to known adduct types.The results show that for relatively unstrained pyrroloindoles, the formation of an amino-ketone intermediate is still significant, but not dominant, that bulky 3-alkyl substituents of indoles can be eliminated to give 2-hydroxycarbazoles, and also that 3-phenyl groups appear to inhibit any reaction.
Addition of Dimethyl Acetylenedicarboxylate to 1,2,3-Trisubstituted Indoles having no Hydrogen on the Carbon Atom attached to C-2.
Letcher, Roy M.,Wai, John S. M.
, p. 514 - 536 (2007/10/02)
Addition of dimethyl acetylenedicarboxylate to seven 1,2,3-trisubstituted indoles having no hydrogen on the carbon atom attached to C-2, has yielded fourteen adducts which are mainly fused γ-lactones, but which include a new phenanthridine-dione, a novel spiro-dihydroindole, and a carbazole formed by the loss of methane.All structures were elucidated by spectroscopy.
