名称:
Synthesis of tetraphenylphosphonium (thio)phosphorylthiobenzamides and hydrolytic degradation to Ph3P=O, H2S and phosphoryl(thio)benzamides: A route for crystal design of PhC(X)NHP(O)(OiPr)2 (X=S, O)
摘要:
Reactions of the sodium salts of PhC(S)NHP(Y)(OiPr)(2) (Y=S, HLI; O, HLII) with PPh4Br in 96% aqueous EtOH leads to the corresponding compounds PPh4LIII. The structures of these compounds were investigated by IR. H-1, P-31{H-1} NMR spectroscopies; their compositions were examined by microanalysis. Recrystallization of PPh4LI,II from EtOH/H2O solution (1:1, v/v) leads to the formation of HLII and PhC(O)NHP(O)(OiPr)(2) (HLIII), respectively. The crystal structures of HLII,III are reported and compared with the previously reported polymorphs. (C) 2012 Elsevier BM. All rights reserved.