Detail of "64896-28-2"

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Hydroformylation with extremely low levels of rhodium: experimental design optimization of a highly selective, high turnover process for the production of isovaleraldehyde

Hydroformylation with extremely low levels of rhodium: experimental design optimization of a highly selective, high turnover process for the production of isovaleraldehyde. Solodar, A. John; Sall, Erik d.; Stout, Larry E., Jr. (Monsanto Corporate Research, Monsanto Company, St. Louis, MO 63167, USA). Chemical Industries (Dekker), 68(Catalysis of Organic Reactions), 119-132 (English) 1996 Dekker. CODEN: CHEIDI. ISSN: 0737-8025. DOCUMENT TYPE: Journal CA Section: 45 (Industrial Organic Chemicals, Leather, Fats, and Waxes) Section cross-reference(s): 35, 37, 67 A logical method for the com. synthesis of isovaleraldehyde (I) is hydroformylation of isobutene (II). However, the low I prodn. vol. which we required excluded the possibility of a continuous process and it was felt that catalyst handling losses would make a traditional rhodium-phosphine system too costly in a batch mode. This dilemma was solved by developing a batch process for the hydroformylation of II which employed a non-phosphine Rh(CO)2 acetylacetonate system at such low levels that Rh could be considered a "throwaway" ingredient in the process. 12257-42-0 32305-98-9 64896-28-2 120471-36-5.

S,S-CHIRAPHOS [(S,S)-(-)-(1,2-dimethyl-1,2-ethanediyl)bis(diphenylphosphine)]

S,S-CHIRAPHOS [(S,S)-(-)-(1,2-dimethyl-1,2-ethanediyl)bis(diphenylphosphine)]. Bergens, Steven H.; Whelan, John; Bosnich, B. (Dep. Chem., Univ. Chicago, Chicago, IL 60637, USA). Inorganic Syntheses, 31, 131-138 (English) 1997 Wiley. CODEN: INSYA3. ISSN: 0073-8077. 64896-28-2 and 81495-76-3 which are cas registry numbers of substances are two of reagents here. DOCUMENT TYPE: Journal CA Section: 78 (Inorganic Chemicals and Reactions) (R,R)-(-)-2,3-butanediol reacted with methanesulfonyl chloride to give (R,R)-2,3-dimethyl-1,2-ethanediylbis(methanesulfonate), which reacted with potassium diphenylphosphide and then Ni(NCS)2 to yield [Ni(S,S-chiraphos)(NCS)2] (S,S-chiraphos = (S,S)-(1,2-dimethyl-1,2-ethanediyl)bis(diphenylphosphine)). S,S-chiraphos was isolated by reaction of [Ni(S,S-chiraphos)(NCS)2] with NaCN. .