52555-41-6Relevant academic research and scientific papers
Highly Z-selective synthesis of a,b-unsaturated nitriles using the Horner-Wadsworth-Emmons reaction
Ando, Kaori,Okumura, Miho,Nagaya, Shigeo
, p. 2026 - 2028 (2013/04/23)
A new HWE reagent, (o-tBuC6H4O)2P(O)CH2CN (2e), reacts with various types of aldehydes to give Z-a,bunsaturated nitriles with 86% to >99% Z-selectivity. Especially, the reaction of 2e with bulkier aldehydes, both aromatic and aliphatic, gave the Z-olefins with extremely high selectivity. The combination of t-BuOK and 18-crown-6 (1 equiv) is the base of choice for aromatic aldehydes and t-BuOK is generally the base of choice for aliphatic aldehydes.
Low Triphenylphosphate, High Phosphorous Content Isopropyl Phenyl Phosphates With High Ortho Alkylation
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, (2012/01/14)
The present invention relates to low triphenyl phosphate, high phosphorous content aryl phosphates with high ortho alkylation that are suitable for use as flame retardant compositions, processes for their preparation, and their use as flame retardants.
KINETICS OF ESTERIFICATION OF MONOISOPROPYLPHENOLS WITH PHOSPHORYL TRICHLORIDE
Magura, Miroslav,Vojtko, Jan,Ilavsky, Jan
, p. 1311 - 1317 (2007/10/02)
The kinetics of liquid-phase isothermal esterification of POCl3 with 2-isopropylphenol and 4-isopropylphenol have been studied within the temperature intervals of 110 to 130 and 90 to 110 deg C, respectively.The rate constants and activation energies of the individual steps of this three-step reaction have been calculated from the values measured.The reaction rates of the two isomers markedly differ: at 110 deg C 4-isopropylphenol reacts faster by the factors of about 7 and 20 for k1 and k3 respectively.This finding can be utilized in preparation of mixed triarylphosphates, since the alkylation mixture after reaction of phenol with propene contains an excess of 2-isopropylphenol over 4-isopropylphenol.
