A general route to pentaco-ordinate amino(oxy)- and diamino(oxy)-phosphoranes from azido-compounds and phosphorus(III) reagents
作者:J. I. G. Cadogan、Ian Gosney、Elizabeth Henry、Thomas Naisby、Barry Nay、Nevin J. Stewart、Neil J. Tweddle
DOI:10.1039/c39790000189
日期:——
Bifunctional azido-compounds such as benzohydroximic azide, α-azidobenzaldehyde 2,4-dibromophenylhydrazone, trans-1-azido-2-hydroxycyclohexane, 2-azido-1-phenylethanol, 2-azidobenzyl alcohol, o-azidoaniline, and α-azidoacetophenones react with a variety of phosphorus(III) reagents to give pentaco-ordinate amino-(oxy)- and diamino(oxy)-phosphoranes.
The reaction of trialkylphosphites or related P-nucleophiles with benzothiete () leads to zwitter ionic species, which show an Arbuzov - like rearrangement to the products and , respectively. New heterocyclic ring systems are generated in the case of cyclic esters. The normal SN2 reaction leads to the 1:2 adducts , whereas in an SN1 process the 1:1 adduct is formed.
亚磷酸三烷基酯或相关的P-亲核试剂与苯并噻吨()的反应导致两性离子物种,分别对产物和表现出类似Arbuzov的重排。在环状酯的情况下,产生了新的杂环系统。正常的S N 2反应生成1:2的加合物,而在S N 1过程中生成1:1的加合物。
Asymmetric Organocatalyzed Synthesis of α‐Aminophosphinates via Thiourea Anion‐Binding Catalysis
作者:Cáoimhe J. Niland、Joseph J. Ruddy、Martin P. O'Fearraigh、Eoghan M. McGarrigle
DOI:10.1002/ejoc.202301212
日期:2024.3.18
P-Stereogenic α-aminophosphinates were obtained in high enantioselectivity via anion-binding catalysis with thiourea catalysts, further expanding the range of nucleophiles that can be used in this type of catalysis.
A thermolysis study of poly(trimethylene phenylphosphinate) and poly(2,2-dimethyltrimethylene phenylphosphinate). NMR and x-ray structure of 2-oxo-2-phenyl-4,4-dimethyl-1,2-oxaphospholane
作者:Gurdial Singh、Gade S. Reddy、Joseph C. Calabrese