Sulfonated phenyl phosphites

Ammonium salts of sulfonated phenyl phosphites, which are surprisingly resistant to hydrolysis, have been prepared (25). The compounds are more water stable than triphenyl phosphite, but they decompose completely within 24 h. 

Oxidation of sulfur and phosphorus compounds. The peroxide has been used to oxidize the sulfide (2) to the corresponding sulfone in 83% yield without attack of the double bond. Geranyl phenyl sulfide is oxidized to the corresponding sulfone in Ninular yield.4 Trialkylphosphines and phosphites are oxidized to the corresponding oxides in high yield.5... 

Interaction of triethyl phosphite and phenyl benzenethiosulfonate is complicated, according to Michalski et al. (223), by concurrent reduction of the sulfonate ester. Thus, in addition to ethyl benzenesulfinate and 0,0-diethyl 8-phenyl phosphorothioate (eq. 8), there is obtained diphenyl disulfide and triethyl phosphate V... 

Poly(amide)s (PA)s that bear the sulfone group in the backbone have been described." These types of PA, which are based on 4,4 -bis-((3-carboxy-phenoxy)(p-benzoyl))-phenyl sulfone, c.f. Figure 7.7, or the corresponding 4-carboxy acid component" is amidized by an aromatic diamine, e.g., p-diaminobenzene. The direct polycondensation of a dicarboxylic acid with aromatic diamines uses triphenyl phosphite and pyridine. The introduction of m-structures increases the solubility of the polymers and leads to... 

Shingare and co-workers have presented for the first time a successful implementation of ultrasound irradiation for the rapid synthesis of a-hydroxy phosphonates (521) and a-amino phosphonates (525) under solvent-free conditions from triethyl phosphite (524), aromatic aldehydes (523) and amines (522) using camphor sulfonic acid (CSA) (Scheme 130). One-pot, three-component Kabachnik-Fields synthesis of a-aminophos-phonates (529) from carbonyl compounds (526), primary amines (527), and dibenzyl/dimethyl/diethyl substituted phosphites (528) has been carried out in high yields, using H-beta zeolite as a reusable catalyst (Scheme 131). Zhang and co-workers have developed the nickel-catalysed Arbuzov type phosphonylation to afford phenyl substituted phosphonates (532) in the reaction of aryl triflates (530) with triethyl phosphite (531), in which KBr, as an additive, promoted the Sn2 catalytic step (Scheme 132). ... 

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