Efficient and selective Palladium-catalyzed Telomerization of 1,3-Butadiene with Carbon Dioxide
作者:Muhammad Sharif、Ralf Jackstell、Sarim Dastgir、Badria Al-Shihi、Matthias Beller
DOI:10.1002/cctc.201600760
日期:2017.2.21
A more efficient telomerization of 1,3‐butadiene with carbon dioxide leading to the valuable δ‐lactone 1 (3‐ethylidene‐6‐vinyltetrahydro‐2H‐pyran‐2‐one) is reported. The key to success is the use of a palladium/TOMPP‐catalyst system (TOMPP=tris‐(o‐methoxyphenyl)‐phosphine), which provided under optimal conditions significantly increased yields of the desired product and improved catalyst turnover numbers
据报道,1,3-丁二烯与二氧化碳的更有效的端粒化反应可生成有价值的δ-内酯1(3-亚乙基-6-乙烯基四氢-2H-吡喃-2-1)。成功的关键是使用钯/ TOMPP催化剂体系(TOMPP =三(邻甲氧基苯基)膦),该体系在最佳条件下可显着提高所需产品的收率并改善催化剂的转化率(TON = 1500) )。