24454-89-5Relevant academic research and scientific papers
Asymmetrie construction of rings A - D of Daphnicyclidin-type alkaloids
Dunn, Travis B.,Michael Ellis,Kofink, Christiane C.,Manning, James R.,Overman, Larry E.
supporting information; experimental part, p. 5658 - 5661 (2010/03/01)
[Chemical Equation Presented] The aza-Cope-Mannich reaction and ring-closing metathesis are key steps in the assembly of intermediates containing rings A - D of Daphniphyllum alkaloids of the daphnicyclidin type such as daphnipaxinin and oldhamine A.
Process for the preparation of unsaturated ketones
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, (2008/06/13)
Ketones, which are intermediates in the synthesis of vitamin A or perfumes, and have the general formula: EQU1 wherein R1 is hydrogen or C1-10 hydrocarbon, R2 and R3 are hydrogen or C1-4 alkyl, R4 and R5 are hydrogen or together form a --CH2 --CH2 --C(CH3)2 -- group, R6 and R7 are hydrogen or C1-10 hydrocarbon, or together with the carbon atom to which they are joined form a hydrocarbon ring of up to 10 carbons, or EQU2 forms a hydrocarbon ring of up to 10 carbons joined through R6 and R8 or R7 and R8, R8 is hydrogen or C1-10 hydrocarbon and n is 0-6, are prepared by reacting an unsaturated halide of formula EQU3 wherein X is halogen, with an enol ester of formula EQU4 wherein R9 is C1-20 hydrocarbon, in the presence of a metal catalyst.
