Reference

Utility of Lewis bases in alkyltin trithiolate stabilizer systems for poly(vinyl chloride)

Utility of Lewis bases in alkyltin trithiolate stabilizer systems for poly(vinyl chloride). Katz, Howard Edan; Starnes, William H., Jr. (AT and T Bell Lab., Murray Hill, NJ 07974, USA). Macromolecules, 17(11), 2241-3 (English) 1984. CODEN: MAMOBX. ISSN: 0024-9297. DOCUMENT TYPE: Journal CA Section: 37 (Plastics Manufacture and Processing) Pyridine 1-oxide [694-59-7], tetrahydro-2H-thiopyran 1-oxide [4988-34-5], and tetrahydro-1,3-dimethyl-2(1H)pyrimidinone [7226-23-5] formed 2:1 complexes with alkytrichlorostannanes (I) and inhibited the I-catalyzed dehydrochlorination of trans-6-chloro-4-decene [90147-08-3]. Inhibition effectiveness was related to chlorostannane affinity as detd. by NMR. Methylthiolation of chlorodecene by MeSn(SMe)3 [4848-74-2] took place even in the presence of excess ligand. This suggests that suitable basic ligands can decrease the degrdn. of PVC [9002-86-2] by I and so yield improved stabilizers with alkytin trithiolates.

Macroheterocycles

Macroheterocycles. XV. Synthesis and ion-selective properties of cyclic N,N'-dialkylureas. Bogatskii, A. V.; Luk'yanenko, N. G.; Kirichenko, T. I.; Limich, V. V.; Karpenko, L. P. (Fiz.-Khim. Inst., Odessa, USSR). Zh. Org. Khim., 20(1), 101-8 (Russian) 1984. CODEN: ZORKAE. ISSN: 0514-7492. DOCUMENT TYPE: Journal CA Section: 28 (Heterocyclic Compounds (More Than One Hetero Atom)) Section cross-reference(s): 72 Reaction of cyclic thioureas with alkyl halides took place via formation, rearrangement, and hydrolysis of isothiuronium salts to give N,N-dialkyl cyclic ureas. The reaction was general regardless of ring size, and could be used to prep. crown type compds.In this experiment, several chemicals are used like 7226-23-5 and 74804-38-9 such as the tetraazacyclodocosane I. Ion selectivities on electrodialysis for the crown analogs were detd.; for Ba2+ the selectivity was 1 in all four cases tested. .