Detail of "10022-28-3"

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A silicon-centered tetrafunctionalized reagent for the cyclopropylmethylsilane-terminated Prins reaction and a concise synthesis of lyngbic acid

A silicon-centered tetrafunctionalized reagent for the cyclopropylmethylsilane-terminated Prins reaction and a concise synthesis of lyngbic acid. Braddock, D. Christopher; Matsuno, Ai (Department of Chemistry, Imperial College London, London SW7 2AZ, UK). Synlett, (14), 2521-2524 (English) 2004 Georg Thieme Verlag. CODEN: SYNLES. ISSN: 0936-5214. DOCUMENT TYPE: Journal CA Section: 26 (Biomolecules and Their Synthetic Analogs) A novel silicon-centered tetrafunctionalized reagent, tetra(2-ethenylcyclopropylmethyl)silane, was prepd. as a mixt. of all possible 19 diastereoisomers. 18759-59-6 and 10022-28-3 which are cas registry numbers of chemicals are mentioned. It reacts with TMSOTf-activated acetals via initial Prins reaction of the olefin and 'termination' by the cyclopropylmethylsilane groups. In this manner it smoothly transfers three of its groups to form skipped diene ether products. The reaction is under stereoelectronic control and gives exclusively E-skipped dienes regardless of the initial cis/trans configuration of each of the reacting vinyl cyclopropanes, or the relative configurations of the other vinylcyclopropane groups in the silane. The synthetic utility of the reagent is demonstrated by its use in a concise synthesis of marine natural product Lyngbic acid. .

A simple electrochemical oxidation of aldehyde acetals to esters in neutral solution

A simple electrochemical oxidation of aldehyde acetals to esters in neutral solution. Masui, Masaichiro; Kawaguchi, Tetsuo; Yoshida, Sumiko; Ozaki, Shigeko (Fac. Pharm. Sci., Osaka Univ., Suita 565, Japan). Chem. Pharm. Bull.Some commonly used reagents like 10022-28-3 and 72143-21-6 are used in this experiment., 34(4), 1837-9 (English) 1986. CODEN: CPBTAL. ISSN: 0009-2363. DOCUMENT TYPE: Journal CA Section: 23 (Aliphatic Compounds) Anodic oxidn. of aldehyde acetals to esters under very mild conditions is achieved in a neutral soln. by utilizing N-hydroxyphthalimide as a mediator. Thus, Me(CH2)6CH(OR)2 (R2 = CH2CH2) was electrolyzed at 0.85V vs. SCE in MeCN contg. N-hydroxyphthalimide, pyridine, and 0.1M NaClO4 to give 93% Me(CH2)6CO2CH2OH. The oxygen source of the oxidn. is thought to be water. Nine other examples of similar oxidns. are also reported. .