中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
1-己炔基对甲苯基亚砜 | 1-hexynyl p-tolyl sulfoxide | 168332-91-0 | C13H16OS | 220.335 |
1-(对甲苯磺酰基)-1-己炔 | 1-(p-tolylsulfonyl)-1-hexyne | 108895-67-6 | C13H16O2S | 236.335 |
Ruthenium-catalyzed [2+2] cycloaddition reactions of a 2-oxa-3-azabicyclo[2.2.1]hept-5-ene with unsymmetrical alkynes were investigated. Yields of up to 90% were obtained though regioselectivity was modest. Select cycloadducts could be separated and used to access a highly functionalized [3.2.0] bicyclic structure through reductive cleavage of the N–O bond. These ring-opened products displayed a chemical exchange phenomenon in 1D carbon NMR and required characterization by 2D NMR techniques.