Alcohols dithioesters

SEC-RI/UV has also been used to analyse some 26 thioorganotin compounds, organotin carboxylates and chlorides, essentially PVC stabilisers, and some of their main by-products and related compounds (thioesters and dithioesters, n-alkanes) [803]. Not all organotin chlorides were stable in the adopted analysis conditions. N, Ai -ethylene-bis-stearamide and -oleamide in common plastics (ABS, SAN, PUR, LDPE, PA6.6) can be analysed by SEC after derivatisation with trifluo-roacetic anhydride. SEC analysis of fatty alcohol ethoxy-lates (FAE), used as nonionic surfactants, has also been described [759]. 

The first synthesis of acylglycine dithioester derivatives was described by Storer et al.[86l Their synthesis begins with the Pinner reaction 86 88 89 of the corresponding aminoacyl nitrile 39 in the presence of ethanethiol and HC1 gas to produce a thioimidoester hydrochloride 40. Use of an alcohol instead of a thiol gives the thionoesterJ90 The thioimidoester 40 was then treated with H2S gas in the presence of pyridine to yield the dithioester 41 (Scheme 18).[861... 

Base-induced S-allylation of dithioesters [17,18], thionoselenoesters [19] as well as tertiary thioamides [20-23] with allylic halides and alcohols [24] have been commonly used to generate S-allyl ketene-S,W-acetals (W = S,Se, N), which are prone for a thio-Claisen rearrangement. In fact, the marked trend of the starting thiocarbonyl compounds to render the cis-... 

A thiete intermediate (225a) was proposed in the photochemical reaction of dimethyl acetylenedicarboxylate with 225,and similar intermediates were proposed in the addition of thiones or dithioesters to heteroatom-substituted acetylenes. Thiete 227 was suggested as an intermediate in the reaction of 226 with carbon disulfide. Reactions of aryl vinyl sulfide derivatives (2,4,6-trinitrobenzenesulfonate of a phenylthiovinyl alcohol, a phenacyl derivative )... 

Thioacylation of Alcohols and Phenols with Anhydrides, Thiokeienes, Thioesters and Dithioesters... 

Thiolesters (RCOSEt) are reduced to alcohols by UBH4 in Et20 or by an excess of n-Bu4NBH4 in refluxing CHCI3, but are inert in the presence of borane [KH5, LL4]. Dithioesters and thioxoesters are reduced to thiols by BH3-Me2S [JS4]. 

Chloranil oxidized a variety of methylarsenic(iii) esters, amides, or cyclic thioesters, products such as (89), for example, being obtained from a dithioester of methylarsonous acid. ° The analogous reaction with 2-iodo-l,3,2-dihetero-arsolans, however, proceeded with simultaneous cleavage of the As—I bond and formation of the spirocyclic arsenic(v) compound (90). The six-co-ordinate arsenic(v) anions (91) were produced by addition of an alcohol or phenol to an arsolan in the presence of triethylamine, the latter abstracting a proton and forming the required cation. ... 

Both RAFT and NMP controlled/living techniques are suitable for the direct poljunerization of acrylic acid. The RAFT polymerization of AA has been reported in DMF (24,105), various alcohols (106,107), water (108), and dioxane (109) em-plojdng a variety of RAFT CTAs including dithioesters, xanthates, dithiocarba-mates and trithiocarbonates. AA is also susceptible to controlled polymerization by NMP (110,111). 

A Pd-catalyzed carbonylative coupling reaction of propargyl alcohols and thiols has been developed by using different reaction conditions. Monothioesters, dithioesters, or sulfur-containing furanones can be produced in good to excellent yield and selectivity. This methodology is attractive for the preparation of thioesters and sulfur-substituted... 

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