Allenyl ester precursors for 1H-inden-1-ol carboxylates: Comparisons with their propargylic equivalents having terminal alkyne functions
The reactivity of allenyl carboxylates, Ar(R1)CCCH(O 2CR2) and their isomeric equivalents the terminal propargylic carboxylates, ArC(R1)(O2CR2)CCH, in gold-catalyzed carbocyclization to ind
Asikainen, Martta,Woodward, Simon
experimental part
p. 5492 - 5497
(2012/09/08)
Transition metal-catalyzed pentannulation of propargyl acetates via styrylcarbene intermediates
The indene formation from phenyl-substituted sec- and tert-propargyl esters (terminal alkynes) was achieved by platinum or ruthenium catalysis via E-vinylcarbenoid intermediate. Considering the competitive reactions of pentannulation versus cyclopropanati
Nakanishi, Yusuke,Miki, Koji,Ohe, Kouichi
p. 12138 - 12148
(2008/02/10)
Hydrolytic Resolution of Tertiary Acetylenic Acetate Esters With the Lipase from Candida Cylindracea
The kinetic resolution of a series of tertiary acetylenic acetate esters using the lipase from Candida cylindracea has been explored.Compounds 6c and the trifluoromethyl acetate 6e have been resolved with high enantiomeric enrichment.Several other tertiary acetate esters carrying a CF3 group have been investigated which proved inert to enzymatic hydrolysis.From these results and published data, we are able to propose a predictive model for identifying the preferred enantiomer of secondary and tertiary trifluoromethyl acetate esters for this lipase.
O'Hagan, David,Zaidi, Naveed A.
p. 947 - 949
(2007/10/02)
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