34713-98-9Relevant articles and documents
Tandem Inter [4 + 2]/Intra [3 + 2] Cycloadditions. 17. The Spiro Mode. Efficient and Highly Selective Synthesis of Azapropellanes
Denmark, Scott E.,Middleton, Donald S.
, p. 1604 - 1618 (1998)
A new variant of the tandem inter [4 + 2]/intra [3 + 2] nitroalkene cycloaddition has been developed. Intermolecular [4 + 2] cycloaddition of a 2-nitroalkene (bearing an unsaturated ester moiety, the dipolarophile) with a vinyl ether produces a cyclic nit
Forazoline A: Marine-Derived Polyketide with Antifungal in Vivo Efficacy
Wyche, Thomas P.,Piotrowski, Jeff S.,Hou, Yanpeng,Braun, Doug,Deshpande, Raamesh,McIlwain, Sean,Ong, Irene M.,Myers, Chad L.,Guzei, Ilia A.,Westler, William M.,Andes, David R.,Bugni, Tim S.
, p. 11583 - 11586 (2014)
Forazoline A, a novel antifungal polyketide with in vivo efficacy against Candida albicans, was discovered using LCMS-based metabolomics to investigate marine-invertebrate-associated bacteria. Forazoline A had a highly unusual and unprecedented skeleton.
Mutual kinetic resolution of 3-methyl-3,4-dihydro-2H-1,4-benzoxazines and 2-alkoxyacyl chlorides
Vakarov, Sergey A.,Gruzdev, Dmitry А.,Sadretdinova, Liliya Sh.,Kodess, Mikhail I.,Tumashov, Andrey A.,Gorbunov, Evgeny B.,Levit, Galina L.,Krasnov, Victor P.
, p. 437 - 446 (2018)
[Figure not available: see fulltext.] Stereoselective acylation of racemic 3-methyl-3,4-dihydro-2Н-1,4-benzoxazine and its 7,8-difluoro-substituted analog with racemic 2-alkoxyacyl chlorides was stidied. The reactions of 3-methyl-3,4-dihydro-2H-1,4-benzoxazines with 2-methoxyisopentanoyl chloride were found to be more selective (selectivity factor s 31–32) compared to the acylation with other studied propanoyl chlorides (s 18–21). This fact was probably caused by the significant steric hindrance due to the isopropyl substituent in acyl chloride compared to the methyl group in reagents derived from propanoic acid.
An efficient method for the preparation of enantiomerically pure N- acylarylsulfonamides having an asymmetric center at the α-position: Condensation of acid chlorides and arylsulfonamides under solid-liquid two- phase conditions
Ishizuka, Natsuki,Matsumura, Ken-ichi,Hayashi, Kunio,Sakai, Katsunori,Yamamori, Teruo
, p. 784 - 788 (2000)
A convenient synthetic method for the preparation of enantiomerically pure N-acylarylsulfonamides having an asymmetric center at the α-position of the carbonyl group is described. Chiral phenylacetic acids are first converted to the corresponding acid chl
C3-Symmetric Tricyclo[2.2.1.02,6]heptane-3,5,7-triol
Kozel, Volodymyr,Daniliuc, Constantin-Gabriel,Kirsch, Peer,Haufe, Günter
, p. 15456 - 15460 (2017)
A straightforward access to a hitherto unknown C3-symmetric tricyclic triol both in racemic and enantiopure forms has been developed. Treatment of 7-tert-butoxynorbornadiene with peroxycarboxylic acids provided mixtures of C1- and C3-symmetric 3,5,7-triacyloxynortricyclenes via transannular π-cyclization and replacement of the tert-butoxy group. By refluxing in formic acid, the C1-symmetric esters were converted to the C3-symmetric formate. Hydrolysis gave diastereoisomeric triols, which were separated by recrystallization. Enantiomer resolution via diastereoisomeric tri(O-methylmandelates) delivered the target triols on a gram scale. The pure enantiomers are useful as core units of dopants for liquid crystals.
The determination of the absolute configuration of a chiral 2,3′-diindolylarylmethane by NMR spectroscopy
Qi, Shuai,Kang, Chuan-Qing,Han, Fu-She
, p. 181 - 187 (2015)
The University of Chinese Academy of Sciences, Beijing 100864, China We present the determination of the absolute configuration of a chiral 2,3′-diindolylarylmethane 1 by using the combination of NMR spectroscopic and circular dichroism techniques. The re
Novel chiral biphenyl quaternary ammonium salt phase transfer catalyst and preparation method and application thereof
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Paragraph 0051-0052, (2020/09/09)
The invention discloses a novel chiral biphenyl quaternary ammonium salt phase transfer catalyst and a preparation method and application thereof. The catalyst comprises a compound A and a compound B.The molecular structure of the compound A is shown as a