Rhodium-Catalyzed Linear Cross-Trimerization of Two Different Alkynes with an Alkene and Two Different Alkenes with an Alkyne
作者:Masayuki Kobayashi、Ken Tanaka
DOI:10.1002/chem.201200903
日期:2012.7.23
paths with rhodium: A cationic RhI/H8‐BINAP complex has been found to catalyze the linear cross‐trimerization of terminal alkynes, acetylenedicarboxylates, and acrylamides to give substituted trienes. The asymmetric linear cross‐trimerization, giving substituted chiral dienes, has also been achieved by using monosubstituted alkenes and (R)‐BINAP instead of terminal alkynes and H8‐BINAP (see scheme;
与铑的交叉路径:阳离子Rh I / H 8 ‐BINAP络合物可催化末端炔烃,乙炔二羧酸酯和丙烯酰胺的线性交叉三聚反应,生成取代的三烯。还可以通过使用单取代的烯烃和(R)-BINAP代替末端炔烃和H 8 -BINAP(参见方案; H 8 -BINAP = 2,2'-bis )来实现不对称线性交叉三聚,得到取代的手性二烯。(二苯基膦基)-5,5',6,6',7,7',8,8'-八氢-1,1'-联萘基; BINAP = 2,2'-双(二苯基膦基)-1,1'-联萘]]。