Synthesis of 1-substituted trans-2-thiahydrindanes and 3-substituted trans-2-thiadecalins
摘要:
Methods of synthesis of 1-R-trans-2-thiahydrindanes and 3-R-trans-2-thiadecalins from trans-1-methoxymethyl-2-chlorocyclohexane have been developed. The order of the chromatographic elution of the isomeric sulfides formed has been found. The configurations of the compounds have been established by H-1 and C-13 NMR spectroscopy. The characteristics of the intermediate and final compounds are given. The splitting of 1-R-trans-2-oxahydrindanes and 3-R-trans-2-oxadecalins by the PBr3/conc. HBr system has been effected.
PROBLEM TO BE SOLVED: To provide a process for the carbonylation of ethylenically unsaturated compounds including vinyl esters and a process for the production of 3-hydroxypropanoate esters or 3-hydroxypropanoic acids.SOLUTION: The process comprises reacting the compound with carbon monoxide in the presence of a source of hydroxyl groups and of a catalyst system. The catalyst system is obtainable by combining: (a) a metal of Group 8, 9 or 10 or a compound thereof: and (b) a bidentate ligand of general formula (I): X(X)-Q-A-R-B-Q-X(X).
NORBORNENE-TYPE POLYMERS HAVING QUATERNARY AMMONIUM FUNCTIONALITY
申请人:Bell Andrew
公开号:US20110143260A1
公开(公告)日:2011-06-16
Embodiments of the present disclosure encompass vinyl addition and ROMP polymers having at least one type of repeating unit that encompasses a comprise N
+
(CH
3
)
3
OH
−
moiety. Other embodiments in accordance with the disclosure include alkali anion-exchange membranes (AAEMs) made from one of such polymers, anion fuel cells (AFCs) that encompass such AAEMs and components of such AFCs, other than the AAEM, that encompass one of such polymers.