Phosphorus-sulfur FR additives and polymer systems containing same
申请人:Dow Global Technologies LLC
公开号:US08058332B2
公开(公告)日:2011-11-15
Phosphorus-sulfur compounds have flame retardant activity in organic polymer systems. The phosphorus-sulfur compounds can be represented by the structure:
wherein X is oxygen or sulfur, T is a covalent bond, oxygen, sulfur or nitrogen, provided that at least one of X and T is sulfur, each X′ is independently oxygen or sulfur, each m is independently zero or 1 when X′ is oxygen and zero, 1 or 2 when X′ is sulfur, n is at least 1 and preferably at least 2, each R is independently an unsubstituted or inertly substituted hydrocarbyl group or the R groups together form an unsubstituted or inertly substituted divalent organic group and A is an organic linking group.
Synthesis of Glycosyl Cyanides by the Reaction of 1-S-Phosphorothioates of Carbohydrates with Trimethylsilyl Cyanide
作者:Wieslawa Kudelska
DOI:10.1515/znb-1998-1107
日期:1998.11.1
A new procedure is described for the synthesis of α,β-glycosyl cyanides by the reaction of per-O-benzylated S-α-ᴅ-glycopyranosyl phosphorothioates with trimethylsilylcyanide in the presence of Lewis acid. Starting S-glycosyl phosphorothioates are prepared, directly, from O-benzyl protected reducing D-hexopyranoses (gluco-, galacto-, manno-) and alkylammonium salt of phosphorothioic acid under Lewis
Kudelska, Polish Journal of Chemistry, 1997, vol. 71, # 11, p. 1548 - 1552
作者:Kudelska
DOI:——
日期:——
Cyclic organophosphorus compounds—II
作者:R.S. Edmundson
DOI:10.1016/s0040-4020(01)98496-0
日期:1964.1
The IR spectra of 47 1,3,2-dioxaphosphorinanes, mostly new compounds, have been recorded and discussed. Assignments have been made to PO, POC (alkyl and aryl), PS and PN stretching motions. In addition,it is suggested tentatively that multiple bands found at around 1000 to 1050 cm−1 and at around 1150 to 1200 cm−1 may be due to ring PO(C) vibrations.
记录和讨论了47种1,3,2-二氧杂磷酰萘啉(主要是新化合物)的红外光谱。分配给P,O,POC(烷基和芳基),PS和PN拉伸运动。另外,初步建议在大约1000至1050 cm -1和大约1150至1200 cm -1处发现多个频带可能是由于环PO(C)振动所致。
Metal-Free <i>S</i>-Arylation of Phosphorothioate Diesters and Related Compounds with Diaryliodonium Salts
作者:Sudeep Sarkar、Marcin Kalek
DOI:10.1021/acs.orglett.2c04310
日期:2023.2.3
method allows for the preparation under simple conditions of a broad range of S-aryl phosphorothioates, including complex molecules (e.g., dinucleotide or TADDOL derivatives), as well as other related organophosphorus compounds arylated at a chalcogen. The reaction proceeds with a full retention of the stereogenic center at the phosphorusatom, opening convenient access to P-chiral products. The mechanism