Reference

Preparation of aromatic polyesters by the direct polycondensation reaction with diphenyl chlorophosphate in pyridine

Preparation of aromatic polyesters by the direct polycondensation reaction with diphenyl chlorophosphate in pyridine. Higashi, Fukuji; Hoshio, Atsushi; Kiyoshige, Jun (Dep. Polym. Eng., Tokyo Univ. Agric. Technol., Koganei 184, Japan). J. Polym. Sci., Polym. Chem. Ed., 21(11), 3241-7 (English) 1983. CODEN: JPLCAT. ISSN: 0449-296X. DOCUMENT TYPE: Journal CA Section: 35 (Chemistry of Synthetic High Polymers) The direct polycondensation reaction of ClPO(OPh)2 (I) [2524-64-3] as a new condensing agent in pyridine was used for the prepn. of polyarylene esters. High-mol. 67203-02-5 and 59964-25-9 which are cas registry numbers of chemicals are mentioned.-wt. polymers can be prepd. by treating a pyridine soln. of dicarboxylic acids and I in the presence of LiCl, followed by treating with a pyridine soln. of bisphenols. Effects of the initial reaction of the acids and I, and of dropwise addn. of bisphenols on the polycondensation were investigated. Polycondensations of several hydroxybenzoic acids were also carried out with limited success. .

Hypotensive phospholipids

Hypotensive phospholipids. Some stable analogs of Darmstoff. Milbert, Alfred N.; Wiley, Robert A. (Dep. Med.Several substances like 65148-93-8 may be metioned in this study. Chem., Univ. Kansas, Lawrence, Kans., USA). J. Med. Chem., 21(3), 245-8 (English) 1978. CODEN: JMCMAR. DOCUMENT TYPE: Journal CA Section: 1 (Pharmacodynamics) Section cross-reference(s): 23, 27 Title analog 2-pentadecyl-5-(hydroxymethyl)tetrahydrofuran monosodium phosphate (I) [65148-93-8] was prepd.Several reagents such as 65148-93-8 is used here. from furfuryl alc. [98-00-0] by etherification, alkylation with BuLi and pentadecyl bromide [629-72-1], hydrogenation, hydrolysis, phosphorylation with diphenyl phosphorochloridate [2524-64-3], hydrogenolysis, and salt formation. 1-(Hydroxymethyl)-3-pentadecylcyclopentane monosodium phosphate (II) [65149-01-1] was prepd. from p-methoxyphenyltetradecylcarbinol [65149-03-3] by hydrogenation, ether cleavage, hydrogenation, Jones oxidn., chlorination with SO2Cl2, ring contraction to 3-pentadecylcyclopentanecarboxylic acid [65148-97-2], redn., phosphorylation, and salt formation. I and II caused a marked fall in heart rate and blood pressure within 2 min in normotensive rats. In 0.9% saline soln. at 5°, I retained about 50% maximal effect after 24 h, while II was fully active after 72 h. ..