Metal-free oxidative C–C bond formation of active methylenic sp3 C–H bonds with benzylic sp3 C–H and allylic sp3 C–H bonds mediated by DDQ
摘要:
An efficient and simple method for the oxidative coupling of benzylic and allylic sp(3) C-H bonds with active methylenic sp(3) C-H bonds under metal-free conditions was developed by employing 2,3-dichloro-5,6-dicyanobenzoquinone (DDQ) as an oxidant. The reaction was shown to proceed smoothly for various 1,3-dicarbonyl compounds with a range of benzylic and allylic substrates in good to excellent yields. (C) 2010 Elsevier Ltd. All rights reserved.
An efficient and simple method for the oxidative coupling of benzylic and allylic sp(3) C-H bonds with active methylenic sp(3) C-H bonds under metal-free conditions was developed by employing 2,3-dichloro-5,6-dicyanobenzoquinone (DDQ) as an oxidant. The reaction was shown to proceed smoothly for various 1,3-dicarbonyl compounds with a range of benzylic and allylic substrates in good to excellent yields. (C) 2010 Elsevier Ltd. All rights reserved.