Copper-catalyzed hydrophosphinylation of terminal ynamides with H -phosphinates
摘要:
A method for Cu(OAc)(2)-catalyzed hydrophosphinylation of ynamides was developed and applied to several types of terminal ynamides and H-phosphinates. The products were transformed into beta-ami-nophosphinates, which are useful for the preparation of biologically active compounds. (C) 2017 Elsevier Ltd. All rights reserved.
A range of alkyl phenylphosphonites are prepared from the reaction of phenylphosphinic acid with the corresponding alkyl chloroformates. A mechanism for this reaction is proposed. 2003 Elsevier Science Ltd. All rights reserved.
Synthesis of aryl phosphinates was achieved through cross-coupling reactions of aryl iodides with H-phosphinates catalyzed by nickel under mild conditions. The method was applicable to various aryl iodides and H-phosphinates having defined stereochemistry at the phosphorus atom.
A method for the catalytic hydrophosphinylation of internal ynamides with H-phosphinates has been developed for the first time. The protocol employing the catalyst generated from NiBr2 and PPh3 could be applied to several types of ynamides and H-phosphinates, affording (E)-beta-aminovinylphosphinates in a highly regio- and stereoselective manner. (C) 2018 Elsevier Ltd. All rights reserved.