α-Phosphonovinyl nonaflate: Their synthesis and cross-coupling reactions
摘要:
A new class of vinylphosphonates, alpha-phosphonovinyl nonafluorobutanesulfonates (i.e. nonaflates) is readily prepared from the corresponding acylphosphonates and nonafluorobutanesulfonyl fluoride in the presence of DBU. The obtained nonaflates are converted to the phosphono-containing enynes and dienes via Pd catalyzed coupling reactions. (C) 1999 Elsevier Science Ltd. All rights reserved.
The first palladium‐catalyzed method for the arylation of α‐phosphonovinyl nonaflates is described. Using a catalyst comprised of Pd(OAc)2 and SPhos, terminal and internal α‐aryl vinylphosphonates could be efficiently accessed under mild conditions. The reaction features a broad coupling partner scope and tolerates many functional groups.
A new class of vinylphosphonates, alpha-phosphonovinyl nonafluorobutanesulfonates (i.e. nonaflates) is readily prepared from the corresponding acylphosphonates and nonafluorobutanesulfonyl fluoride in the presence of DBU. The obtained nonaflates are converted to the phosphono-containing enynes and dienes via Pd catalyzed coupling reactions. (C) 1999 Elsevier Science Ltd. All rights reserved.