Kelkar, S V; Reddy, G Bhaskar; Kulkarni, G H, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1991, vol. 30, # 5, p. 504 - 507
Kelkar, S V; Reddy, G Bhaskar; Kulkarni, G H, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1991, vol. 30, # 5, p. 504 - 507
Synthetic Method to Form 2,2′-Bis(naphthoquinone) Compounds
作者:Vishwajeet Jha、Navneet Goyal、Cheryl K. Stevens、Edwin Stevens、Jayalakshmi Sridhar
DOI:10.1021/acs.joc.7b02501
日期:2017.12.15
We have discovered a transition-metal-free approach to the synthesis of 2,2′-bis(naphthoquinones) using a Diels–Alder reaction of conjugated ketene silyl acetals with benzoquinone. Its monomer analogue can also be synthesized by simply increasing the equivalents of benzoquinone.
[EN] HOMOALLYL ALCOHOLS USEFUL AS FRAGRANCES<br/>[FR] ALCOOLS HOMOALLYLIQUES CONVENANT COMME PARFUMS
申请人:GIVAUDAN SA
公开号:WO2009065244A1
公开(公告)日:2009-05-28
Branched, highly-substituted C9-C13 homoallyl alcohols of formula (I) in which R1 and R2 are selected from H or Me and R3 is selected from H, Me and Et. The compounds are useful in fragrance applications in which a floral note is desired.
A Flexible Route toward Polypropylene Model Compounds of Various Tacticities
作者:Jacqueline Marchand-Brynaert、Xavier Drooghaag、Gaëtan Henry
DOI:10.1055/s-0030-1258233
日期:2010.11
paper reports the flexible synthesis of 2,4,6,8,10-pentamethylundecane (PMU) as well as a chromatographic method for the separation of its diastereoisomers. This strategy offers a unique opportunity to accede to three model compounds of polypropylene (PP) of different tacticities (i.e., isotactic, syndiotactic, and atactic PP). model hydrocarbons - polyolefins - total synthesis - HPLC - NMR
Esterase from Horse Liver (HLAP) was able to hydrolyze a series of linear and cyclic beta,beta-dialkyl-gamma-nitroesters, in spite of the well-known reluctance of hydrolytic enzymes to recognize and transform hindered substrates, such as those possessing a stereogenic quaternary carbon atom next to the reaction site. The resulting optically active gamma-nitroesters gave access to optically active beta,beta-disubstituted gamma-aminoacids as well as alpha,alpha-disubstituted succinic acids, both being biologically relevant compounds. (C) 2010 Elsevier Ltd. All rights reserved.
Synthesis and absolute configuration of (R)-(+)- and (S)-(-)-5-(1,3-dimethylbutyl)-5-ethylbarbituric acid