Enantioselective synthesis of 7-cycloocten-1,3,5,6-tetraol derivatives by enzymatic asymmetrization
作者:Carl R. Johnson、Lalgudi S. Harikrishnan、Adam Golebiowski
DOI:10.1016/0040-4039(94)80105-3
日期:1994.10
meso-Diol 4, derived from 1,5-cyclooctadiene, in the presence of Pseudomonas cepacia lipase in isopropenyl acetate, afforded enantiopure 5, an attractive intermediate for the synthesis of sugars and related compounds.
A Simple Preparation of Cyclic Vinylic Bromides (1-Bromocycloalkenes and 1-Bromo-1,5-cyclooctadiene) from 1,2-Dibromocycloalkanes
作者:Balachandra S. Bandodakar、Gopalpur Nagendrappa
DOI:10.1055/s-1990-27031
日期:——
1,2-Dibromocyclopentane, 1,2-dibromocyclohexane, 1,2-dibromocycloheptane, 1,2-dibromocyclooctane, 1,2-dibromocyclododecane, and 5,6-dibromocyclooctene are smoothly dehydrobrominated to the corresponding 1-bromocycloalkenes in good yield using morpholine and dimethyl sulfoxide in benzene or ethanol.
1,5-Cyclooctadienyl alcohols and ketones generate a new class of COD Pt complexes
作者:Angela E. E. Wandler、Martin R. M. Koos、Martin Nieger、Burkhard Luy、Stefan Bräse
DOI:10.1039/c8dt00075a
日期:——
A variety of new racemic alcohol and ketone cyclooctadiene derivatives was prepared for their complexation with platinum to generate a newclass of platinum(II) complexes.
A Simple and Efficient Approach to the Synthesis of Endo and Exo Bicyclo[6.1.0]nona-3,5-diene-9-carboxaldehyde
作者:Mehdi Ghandi、Gholamreza Mashayekhi
DOI:10.3390/12102427
日期:——
followed by cyclopropanation with ethyl diazoacetate, led to the formation of endo and exo ethyl 4,5-dibromobicyclo[6.1.0]nonane-9-carboxylates 3a and 3b. Bis-dehydrobromination of 3a and 3b using 1,8-diazabicyclo[5,4,0]undec-7-ene (DBU) afforded the endo and exo ethyl bicyclo[6.1.0]nona-3,5-diene-9-carboxylates 4a and 4b. Reduction of these compounds to the corresponding alcohols 5a and 5b and subsequent