A simple and green procedure for the conjugate addition of thiols to conjugated alkenes employing polyethylene glycol (PEG) as an efficient recyclable medium
作者:Ahmed Kamal、D. Rajasekhar Reddy、Rajendar
DOI:10.1016/j.tetlet.2005.09.082
日期:2005.11
Polyethylene glycol (PEG) is found to be an inexpensive, nontoxic, environmentally friendly reaction medium for the conjugate addition of thiols to conjugated alkenes to afford the corresponding adducts in excellent yields under mild and neutral conditions. Products of undesirable side reactions resulting from polymerization are not observed. The use of PEG avoids the use of either acid or base catalysts for this conversion and moreover PEG can be recovered and reused. (c) 2005 Elsevier Ltd. All rights reserved.
Potassium phosphate catalyzed highly efficient synthesis of structurally diverse thioethers at ambient temperature
作者:Mitragotri, Satish D.、Kulkarni, Makarand A.、Desai, Uday V.、Wadagaonkar, Prakash P.