A fully fluorousMitsunobureaction procedure is introduced. This employs both existing [(C6F13CH2CH2C6H4)2PPh] and new [C8F17CH2CH2C6H4PPh2] fluorous phosphines and a new fluorous azodicarboxylate (C6F13CH2CH2OC(O)NNCOOCH2CH2C6F13). A procedure involving parallel reactions with representative nucleophiles and alcohols under typical Mitsunobu conditions in THF followed by rapid solid phase extraction
引入了完全氟的Mitsunobu反应程序。它既使用现有的[(C 6 F 13 CH 2 CH 2 C 6 H 4)2 PPh],又使用新的[C 8 F 17 CH 2 CH 2 C 6 H 4 PPh 2 ]氟膦和新的氟偶氮二羧酸酯(C 6 ˚F 13 CH 2 CH 2 OC(O)NNCOOCH 2 CH 2 C ^ 6 ˚F 13)。该过程涉及在典型的Mitsunobu条件下在THF中与代表性的亲核试剂和醇进行平行反应,然后在氟硅石上进行快速固相萃取(spe),从而提供了具有优良收率的清洁产品。可以容易地分离出包含氧化的氧化膦和还原的酰肼的氟级分,并且可以通过适当的氧化还原反应以高收率再生起始试剂,以供再利用。
Synthesis of All 16 Stereoisomers of Pinesaw Fly Sex Pheromones − Tools and Tactics for Solving Problems in Fluorous Mixture Synthesis
作者:Sivaraman Dandapani、Mario Jeske、Dennis P. Curran
DOI:10.1021/jo051526a
日期:2005.11.1
The application of fluorousmixturesynthesis (FMS) for accessing natural products and their stereoisomers was validated by the total synthesis of all 16 stereoisomers of the pine sawfly sex pheromone. Fourfluorous p-methoxybenzyl groups were used as tags, and a “4-mix-4-split” approach was employed in a divergent synthesis. This paper presents the details of the FMS of pine sawfly sex pheromones