Ontology highlight
ABSTRACT:
SUBMITTER: Heift D
PROVIDER: S-EPMC5497264 | biostudies-literature | 2015 Jul
REPOSITORIES: biostudies-literature
Heift Dominikus D Benkő Zoltán Z Grützmacher Hansjörg H Jupp Andrew R AR Goicoechea Jose M JM
Chemical science 20150513 7
We show that the 2-phosphaethynolate anion, OCP<sup>-</sup>, is a simple and efficient catalyst for the cyclotrimerization of isocyanates. This process proceeds step-wise and involves five-membered heterocycles, namely 1,4,2-diazaphospholidine-3,5-dionide anions and spiro-phosphoranides as detectable intermediates, both of which were also found to be involved in the catalytic conversion. These species can be considered as adducts of a phosphide anion with two and four isocyanate molecules, respe ...[more]