Reaction of allylic aluminum reagents with 1, 3-dithienium tetrafluoroborate and with 2-chloro-1, 3-dithiane: preparation of 2-substituted 1, 3-dithianes
G Picotin, P Miginiac
文献索引：Picotin, Gerard; Miginiac, Philippe Journal of Organic Chemistry, 1985 , vol. 50, # 8 p. 1299 - 1301
Thus, it appears that the reaction of allylic aluminum reagents with either dithienium tetrafluoroborate or 2-chloro-1, 3-dithiane is a way to 2-alken-2-yl-1, 3-dithianes 7. This reaction is particularly valuable from substituted allylic aluminum reagents since it enables the preparation of dithianes 7c-f which cannot be obtained through the alkylation of 2-lithio-l, 3-dithiane (4) with the allylic halides RCH= CHCH2X since such a reaction, which ...
