TFA-catalyzed C–N bond activation of enamides with indoles: efficient synthesis of 3,3-bisindolylpropanoates and other bisindolylalkanes
摘要:
An efficient TFA-catalyzed cleavage of C-N bonds in alkylation of indoles by tertiary enamides was described. A variety of bisindolylalkane derivatives, especially 3,3-bisindolylpropanoates, were expeditiously synthesized in good yields. (c) 2012 Elsevier Ltd. All rights reserved.
3-Phenacylideneoxindoles with tosylmethyl isocyanide and MeOH through C–C bond cleavage: facile synthesis of pyrrole and 2H-pyrrolo[3,4-c]quinoline derivatives
摘要:
A novel reaction of 3-phenacylideneoxindoles (1) with tosylmethyl isocyanide (2a) and MeOH through C-C bond cleavage has been developed. The reaction proceeded under mild conditions, providing a powerful synthetic tool for the construction of pyrrole derivatives (3) from easily accessible starting materials and synthesis of 2H-pyrrolo[3,4-c]quinolines (4) by further dehydration of 3. (C) 2012 Elsevier Ltd. All rights reserved.