C(sp2)-C(sp) and C(sp)-C(sp) Coupling Reactions Catalyzed by Oxime-Derived Palladacycles
作者:Diego A. Alonso、Carmen Nájera、Ma Carmen Pacheco
DOI:10.1002/adsc.200303067
日期:2003.9
4′-dichlorobenzophenone, is an efficient pre-catalyst for the copper- and amine-free Sonogashira coupling between terminal acetylenes and aryl iodides and aryl and vinyl bromides achieving turnover numbers (TON) of up to 72000. Catalyst 8a has also been shown as a effective promoter for the sila-Sonogashira coupling between 1-(trimethylsilyl)alkynes and aryl iodides and bromides in the presence of CuI or
Synthesis of polyphenylene derivatives by thermolysis of enediynes and dialkynylaromatic monomers
作者:Jens A John、James M Tour
DOI:10.1016/s0040-4020(97)00977-0
日期:1997.11
Described are the syntheses of substituted enediynes and dialkynylaromatics using Pd- or cross coupling procedures. The products were then thermalized to afford the corresponding poly(p-phenylene)s, poly(1,4-naphthalene)s, poly(benzo[c]thiophene)s, and poly(dibenzothiophene)s. Fifteen examples are provided that show the scope of the polymerization process based upon substituent patterns and cyclization