Unexpected Course of the Reaction of 1, 3-Bis (dimethylamino) trimethinium Perchlorate with 3-Substituted Prop-2-ynals Leading to 1-Aryl-2, 4, 6-triformylbenzenes

P Suchý, D Dvořák, M Havelková

Index: Suchy, Petr; Dvorak, Dalimil; Havelkova, Martina Collection of Czechoslovak Chemical Communications, 1999 , vol. 64, # 1 p. 119 - 129

Full Text: HTML

Citation Number: 3

Abstract

Abstract Reaction of 1, 3-bis (dimethylamino) trimethinium perchlorate (1) with 3-substituted prop-2-ynals (4) in acetic anhydride at the presence of ZnBr 2 gives upon hydrolysis 1- substituted 2, 4, 6-triformylbenzenes (6) in low to moderate yield. This reaction is restricted to prop-2-ynals bearing electron rich aromatic substituents at the 3-position.

Related Articles:

Sonogashira reaction of aryl and heteroaryl halides with terminal alkynes catalyzed by a highly efficient and recyclable nanosized MCM-41 anchored palladium …

[Lin, Bo-Nan; Huang, Shao-Hsien; Wu, Wei-Yi; Mou, Chung-Yuan; Tsai, Fu-Yu Molecules, 2010 , vol. 15, # 12 p. 9157 - 9173]

An improved general method for palladium catalyzed alkenylations and alkynylations of aryl halides under microwave conditions

[Togninelli, Andrea; Gevariya, Harsukh; Alongi, Maddalena; Botta, Maurizio Tetrahedron Letters, 2007 , vol. 48, # 28 p. 4801 - 4803]

Copper (II) acetate/1, 4-diphenyl-1, 4-diazabuta-1, 3-diene catalyzed Sonogashira cross-coupling of aryl halides with terminal alkynes under aerobic and solvent-free …

[Deng, Chen-Liang; Xie, Ye-Xiang; Yin, Du-Lin; Li, Jin-Heng Synthesis, 2006 , # 20 p. 3370 - 3376]

More Articles...