KETALS

作品数：17被引量：29H指数：4
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相关领域：理学更多>>
相关作者：徐立进郑小燕王学业彭月明更多>>
相关机构：中国人民大学湘潭大学更多>>
相关期刊：《Journal of Wuhan University of Technology(Materials Science)》《Journal of Chemistry and Chemical Engineering》《Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)》《Chinese Journal of Chemistry》更多>>
相关基金：国家自然科学基金湖北省自然科学基金更多>>
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Bifunctional organocatalyst-catalyzed dynamic kinetic resolution of hemiketals for synthesis of chiral ketals via hydrogen bonding control
《Chinese Chemical Letters》2025年第1期248-252,共5页Meng Shan Yongmei Yu Mengli Sun Shuping Yang Mengqi Wang Bo Zhu Junbiao Chang 
supported by the National Natural Science Foundation of China(Nos.82130103,82151525 and 81903465);the Central Plains Scholars and Scientists Studio Fund(2018002);the Natural Science Foundation of Henan Province(No.212300410051);the Science and Technology Major Project of Henan Province(No.221100310300)。
Herein,we report the dynamic kinetic resolution asymmetric acylation ofγ-hydroxy-γ-perfluoroalkyl butenolides/phthalides catalyzed by amino acid-derived bifunctional organocatalysts,and a series of ketals were obtai...
关键词：Bifunctional organocatalyst Dynamic kinetic resolution Hemiketal Chiral ketals Hydrogen bonding 
Stable Send-ketals of 3',5'-O-(Tetraisopropyldisiloxane-1,3-diyl)-2'-Ketouridine
《Chinese Chemical Letters》1998年第11期989-992,共4页Guo Chen CHI Zhong Biao ZHANG Xiao Hua Xu and Ru Yu CHEN (Insitute of Elemento-Organic Chemistry, State Key Laboratory of Elemento-Organic Chemistry,Nankai University, Tianjin, 300071) 
A series of stable semi-ketals were obtained via the reactions of 3',5'-O-(tetraisopropyldisiloxane-1,3-diyl)-2'-ketouridine 1 with primary alcohols. In the addition reaction,only a single diastereomer was observed. T...
关键词：NUCLEOSIDE ketonucleoside semi-ketal configuration 
Further Report on A Novel Scission of Alkyl Carbonyl C-C Bond by Substituted 4-Hydroxyacetophenones被引量：1
《Chinese Chemical Letters》1998年第10期899-902,共4页Wang, J Tang, HT Zhang, P Mak, TCW Zhang, ZY 
3-Methoxy-, 3, 5-dimethoxy-, and 3-phenyl-4-hydroxyacetophenones suffered alkyl carbonyl C-C bond scission to yield 4-hydroxybenzoate esters and 4-isopropenylphenols under standard conditions of ethylene ketal formati...
关键词：C-C bond scission phenolic hydroxy participation 4-hydroxyacetophenones indanols ethylene ketals 
Zeolite-Catalyzed Acetalization Ⅰ. Synthesis of Some Acetals and Ketals through Reaction of Carbonyl Compounds with Ethanediol被引量：2
《Chinese Chemical Letters》1997年第5期377-380,共4页Wei JIANG Yan TIAN Yu Dao MA Qi Long WANG(Department of Chemistry, Shandong University, Jinan 250100)Lei WANG(Department of Pharmacy, Shandong Medical University, Jinan, 250012) 
The acetalization of a series of carbonyl compounds with ethanediolwas performed over two self-steaxned HY zeolle catalpsts' The acetal and ketaiproducts were obtained with high ytelds Espectw, the HY zeollte with hig...
关键词：Synthesis of Some Acetals and Ketals through Reaction of Carbonyl Compounds with Ethanediol 
A NOVEL DEPROTECTION OF ACETALS AND KETALS USING SODIUM HYDROGEN SELENIDES
《Chinese Chemical Letters》1995年第11期955-958,共4页Ping LU Wei Qiang FAN Xun Jun ZHOU (Department of Chemistry,Hangzhou University, 310028.) 
The 1,3-dioxolanes, 1,3-dioxanes and open chain acetals or ketals are easily cleavaged by using sodium hydrogen selenide under basic conditions in high yields.
A NEW METHOD FOR AROMATIZAT ION OF Δ^(5(10))-STEROIDAL C_(3)-DIMETHYL KETALS
《Chinese Chemical Letters》1993年第2期107-108,共2页Guang Dian HAN Hong Yan WEN 
A new method for aromatization of Δ^(5(10))-steroidal C_3-dimethyl ketals with pyridinium hydrobromide perbromide (PHP.Py·HBr·Br_2) to aromatic A ring steroids in high yield (90-95%) is described.
关键词：ION STEROIDAL C3-DIMETHYL KETALS A NEW METHOD FOR AROMATIZAT ION OF PHP 
DEPROTECTION OF ACETALS AND KETALS WITH CpTiCl_3-KI
《Chinese Chemical Letters》1991年第12期907-910,共4页Shao Zu WU Ya Lan ZHANG Tian Hui REN Ning CHEN 
When the mixture of CpTiCl_3-KI is used, many acetals and ketals, which are difficuitly deprotected with CpTiCl_3 alone, can be easily converted to the corresponding carbonyl compounds in high yield at 30℃ in Et_2O.
关键词：DEPROTECTION OF ACETALS AND KETALS WITH CpTiCl3-KI CHEN HIGH 
CONVERSION OF ACETALS AND KETALS TO CARBONYL COMPOUNDS PROMOTED BY ZrCl_4-NaBH_4
《Chinese Chemical Letters》1991年第1期47-50,共4页Shao Zu WU Hui Dong WANG Ning CHENG Department of Chemistry,Lanzhou University.Lanzhou,730000 
In our study on the chemistry of ZrCl_4-NaBH_4,we have found that aldehydes and ketones can be regenerated from acetals and ketals at 30℃ in Et_2O in high yield The reaction mechanism was discussed.
关键词：MS GC CONVERSION OF ACETALS AND KETALS TO CARBONYL COMPOUNDS PROMOTED BY ZrCl4-NaBH4 
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