FRETER K., J. ORG. CHEM. <JOCE-AH>, 1975, 40, NO 17, 2525-2529
作者:FRETER K.
DOI:——
日期:——
Trityl Chloride as a Novel and Efficient Organic Catalyst For Room Temperature Preparation of Bis(indolyl)methanes under Solvent-Free Conditions in Neutral Media
various Lewis acids or protic acids has been reported in the literature for the synthesis of bis(indol-3-yl)methanes, 7-27 however, there are only a few reports using neutral organic catalysts for this aim. 4,11,28 The use of organic catalysts instead of inorganic Lewis acids has some advantages including (i) the possibility of using acid-sensitive substrates and (ii) substrates bearing basic functional