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The First Six-Membered "True" Heterocycle - Hydrogen-Bond-Assisted Ladder Formation in a KOCNPS Ring System
Tuan Q Ly1, Alexandra M Z Slawin1, J Derek Woollins1
1Department of Chemistry, Loughborough University, Loughborough, LE11 3TU (UK), Fax: (+44) 1509-223925.
Angewandte Chemie (International Ed. in English)
|May 2, 2018
Abstract:
A ladder of alternating K2 S2 and K2 O2 rings exists in K[Ph2 P(S)NC(O)Ph]⋅MeOH, the first six-membered "true" heterocycle, in the solid state (see picture). A simple P-N bond-forming reaction between benzamide and Ph2 PCl gives the precursor Ph2 P(S)NHC(O)Ph, from which the potassium salt can be generated by reaction with KOtBu.