Results 71 to 80 of about 50,787 (146)

Stereoselective total synthesis of sporiolide B and attempted synthesis of sporiolide A

open access: yes, 2016
A simple and efficient stereoselective total synthesis of sporiolide B and attempted synthesis of sporiolide A, from epichlorohydrin, using asymmetric synthetic approach is reported. The key reactions involved are Sharpless epoxidation, Jacobsen reaction,
Gangavaram V. M. Sharma (563738)   +1 more
core   +1 more source

Epoxidation of styrene with NaOCl and catalyzed by nickel(II) complexes

open access: yes, 1999
Epoxidation of styrene was catalyzed by some nickel(II) complexes, with NaOCl as the oxygen donor. The catalyst Ni(PA)(2). 2H(2)O has been found to be stable for the epoxidation of styrene.
Yin, GC, Xi, ZW, Cao, GY
core  

Stereoselective Total Synthesis of Mangiferaelactone usingD-Mannose as a Chiral Pool

open access: yes, 2015
A convergent total synthesis of mangiferaelactone has been accomplished in a highly stereoselective manner from readily available D-mannose. The following methods like organocatalytic enantioselective epoxidation, ring-closing metathesis, and Steglich ...
Yadav, Jhillu Singh   +4 more
core   +1 more source

Chemical Modification of Partially Hydrogenated Vegetable Oil to Improve its Functional Properties to Replace Petroleum Waxes [PDF]

open access: yes, 2013
A novel, chemically-modified partially hydrogenated vegetable oil (PHVO) is described. The PHVO is produced by a three-step reaction process that includes epoxidation, a ringopening reaction, followed by esterification.
Wang, Liping, Wang, Tong
core  

Asymmetric Epoxidation of Alkenes Catalyzed by Porphyrin-inspired Manganese Complex

open access: yes, 2013
Asymmetric Epoxidation of Alkenes Catalyzed by Porphyrin-inspired Manganese ...
李军   +5 more
core  

The Olefin Metathesis Approach to Epothilone A and Its Analogues

open access: yes, 2016
The olefin metathesis approach to epothilone A (1) and several analogues (39−41, 42−44, 51−57, 58−60, 64−65, and 67−69) is described. Key building blocks 6−8 were constructed in optically active form and were coupled and elaborated to olefin metathesis ...
S. Ninkovic (3001293)   +8 more
core   +1 more source

Progress in Reaction-Controlled Phase-Transfer Catalysis

open access: yes, 2010
Reaction-controlled phase-transfer catalysis is a new catalytic system This catalytic system is homogeneous during the reaction After the reaction the catalyst becomes insoluble solid and precipitates from the reaction medium. so that the catalyst can be
Li Jun, Gao Shuang, Xi Zuwei
core   +1 more source

Sintesis 9-N-Pentoksi 10-Hidroksi N-Pentil Stearat Campuran dari Asam Oleat

open access: yes, 2011
Compound of 9-n-penthoxy 10-hidroxy n-pentyl stearic mixture which is derivative of fatty acid and can be used for some activities such as lubricant, biodiesel, surfactan, or manufacture of polymeric materials by using oleic acid as substrat through ...
Tarigan, Aspriadi
core   +1 more source

Intensification of Ester Production in a Continuous Reactor [PDF]

open access: yes, 2009
Numerous continuous intensified reactors are now accessible on the market that offer enhanced thermal performances in a continuous reactor. Such reactors are then particularly suited to fast and highly exothermic reactions.
Elgue, Sébastien   +6 more
core  

Sodium borohydride / methoxydiethylborane mediated syn-1,3-stereoselective total synthesis of Herbarumin-III

open access: yes, 2011
1075-1082A simple and efficient stereoselective total synthesis of 10-membered macrolide, herbarumin-III is described. The key steps involved in this synthesis are the selective terminal alkylation of ethyl acetoacetate with ethyl bromide, Sharpless ...
Yadav, J S   +4 more
core  

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