Synthesis of thiolactones using benzyltriethylammonium tetrathiomolybdate as sulfur transfer reagent
摘要:
An interesting sulfur transfer reaction mediated by benzyltriethylammonium tetrathiomolybdate [(PhCH2NEt3)(2)MoS4] converts omega-halo acid chlorides to the corresponding thiolactones in moderate to good yields in one step. (C) 1997 Elsevier Science Ltd.
Synthesis and Radical Cyclization of 2-(β-Haloacyl)-1,2-dihydroisoquinolines by Means of Tin Hydride. One-Pot Synthesis of Benzo[<i>f</i>]indolizidine Systems from Isoquinolines
Reactions of isoquinolines activated by 2-halopropionyl chlorides with tributyltin hydride afford selectively 2-(2-halopropionyl)-1,2-dihydroisoquinolines in good yields, the radicalcyclizations of which furnish benzo[f]indolizidine systems. The above two reactions can be consecutively achieved in one-pot. Furthermore, the present procedures are extended to synthesis of 12,12a-dihydroisoindolo[2,