3-(m-tolyl)indolin-2-one 在
air 作用下,
以
甲苯 为溶剂,
反应 3.0h,
以71%的产率得到3-hydroxy-3-(m-tolyl)indolin-2-one
参考文献:
名称:
N-Heterocyclic Carbene-Palladium(II)-1-Methylimidazole Complex Catalyzed α-Arylation of Oxindoles with Aryl Chlorides and Aerobic Oxidation of the Products in a One-Pot Procedure
摘要:
NHC-Pd(II)-Im complex 1 was found to be an effective catalyst for the alpha-arylation of unprotected oxindoles with aryl chlorides to give products 4 in 44-98% yields under a N-2 atmosphere. Furthermore, if the reactions were first performed under conditions identical to those for the alpha-arylation reaction for 12 hand then exposed to air for another 3 h, 3-aryl-3-hydroxy-2-oxindoles 5 can be obtained in 49-84% yields In a one-pot procedure.
In Situ Generation of Electrophilic Trifluoromethylthio Reagents for Enantioselective Trifluoromethylthiolation of Oxindoles
作者:Xing-Li Zhu、Jin-Hui Xu、Dao-Juan Cheng、Li-Jiao Zhao、Xin-Yuan Liu、Bin Tan
DOI:10.1021/ol5006888
日期:2014.4.18
An organocatalytic asymmetric trifluoromethylthiolation reaction via in situ generation of active electrophilic trifluoromethylthio species involving trichloroisocyanuric acid and AgSCF3 as a practical and easily handled electrophilic SCF3 source for CSP3–SCF3 bond formation was developed. Reactions with this one-pot version strategy occurred in good yields and excellent stereoselectivities to access
Palladium-Catalyzed Asymmetric Benzylation of 3-Aryl Oxindoles
作者:Barry M. Trost、Lara C. Czabaniuk
DOI:10.1021/ja1079755
日期:2010.11.10
we report palladium-catalyzedasymmetric benzylic alkylation with 3-aryl oxindoles as prochiral nucleophiles. Proceeding analogously to asymmetricallylicalkylation, asymmetric benzylation occurs in high yield and enantioselectivity for a variety of unprotected 3-aryl oxindoles and benzylic methyl carbonates using chiral bisphosphine ligands. This methodology represents a novel asymmetric carbon-carbon
The invention relates to indole derivatives of the formula ##SPC1## And their acid addition salts wherein R is hydrogen or lower alkyl, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are each hydrogen, hydroxyl, lower alkyl, lower alkoxy, trifluoromethyl or halogen and X is a halogen atom. The compounds are useful as antidepressant agents. They can also be cyclised to form anti-depressant 10-aryl-2,3,4,10-tetrahydropyrimido-[1,2-a]indol-10-ols.
The invention concerns a process for preparing pyrimido[1,2-a]indoles of general formula (I) ##SPC1## wherein R is hydrogen or lower alkyl and R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are each hydrogen, hydroxyl, lower alkyl, lower alkoxy, trifluoromethyl or halogen by cyclodehydrating an indole derivative of general formula (II) ##SPC2## The products of formula (I) are useful as antidepressants.
Bifunctional chiral 4-aryl-pyridine-N-oxides (ArPNO) were reported for the acylative kineticresolution of 3-hydroxy-3-substitutedoxindoles, where the oxygen acts as the nucleophilic site. Using less sterically hindered acetic anhydride, both the recovered tertiary heterocyclic alcohols and the ester products exhibited good to excellent results with s-factors up to 167. Control experiments supported