Reduction of Li2MnCl4 with magnesium metal provided activated manganese as a black suspension in THF. Treatment of organichalides such as allyl bromides, α-halo esters or aryl halides with activated manganese furnished various organomanganese reagents which reacted further with electrophiles to afford the corresponding adducts. The reaction of a ketone bearing an iodoaryl moiety with this active manganese
Deslongchamps Annulations with Benzoquinone Monoketals
作者:Denis Petrović、Reinhard Brückner
DOI:10.1021/ol202809y
日期:2011.12.16
The so-called Deslongchamps annulation of deprotonated gamma,delta-unsaturated beta-ketoesters 15 to 2-(alkoxycarbonyl)cyclohex-2-en-1-ones or similarly activated cyclohex-2-en-1-ones offers a versatile access to various kinds of decalindiones. The scope of Deslongchamps annulations was extended by establishing acceptor-substituted benzoquinone monoketals such as 13 as viable substrates. They gave octalindiones such as 35 with diastereoselectivities >= 95:5.
PROCESSES AND HOST CELLS FOR GENOME, PATHWAY, AND BIOMOLECULAR ENGINEERING
申请人:enEvolv, Inc.
公开号:EP3027754A1
公开(公告)日:2016-06-08
[EN] PROCESSES AND HOST CELLS FOR GENOME, PATHWAY, AND BIOMOLECULAR ENGINEERING<br/>[FR] PROCÉDÉS ET CELLULES HÔTES POUR INGÉNIERIE BIOMOLÉCULAIRE, GÉNOMIQUE ET DE LA VOIE
申请人:ENEVOLV INC
公开号:WO2015017866A1
公开(公告)日:2015-02-05
The present disclosure provides compositions and methods for genomic engineering.
A Palladium-Catalyzed Asymmetric Allylic Alkylation Approach to α-Quaternary γ-Butyrolactones
作者:Marllon Nascimento de Oliveira、Jeremy Fournier、Stellios Arseniyadis、Janine Cossy
DOI:10.1021/acs.orglett.6b02971
日期:2017.1.6
The Pd-catalyzed asymmetricallylic alkylation (Pd-AAA) of enol carbonates derived from γ-butyrolactones is reported, affording the corresponding enantioenriched α,α′-disubstituted γ-butyrolactones in both high yields and high enantioselectivities (up to 94% ee). This method was eventually applied to the synthesis of chiral spirocyclic compounds.