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1.
Summary. A variety of alcohols were treated with Ph3P and KF in CCl4-DMF at room temperature to afford the corresponding fluorides in very good yields. 相似文献
2.
Silver Nitrate‐Catalyzed Selective Air Oxidation of Benzylic and Allylic Alcohols to Corresponding Aldehydes or Ketones 下载免费PDF全文
The liquid phase selective air oxidation of benzylic and allylic alcohols to corresponding aldehydes or ketones has been achieved in high yields with catalytic amount of AgNO3 and in the presence of Na2CO3. 相似文献
3.
An Efficient Selective Oxidation of Alcohols with Potassium Permanganate Adsorbed on Aluminum Silicate under Solvent-free Conditions and Shaking 总被引:2,自引:0,他引:2
Ji-Dong Lou Chun-Ling Gao Li Li Zhi-Gang Fang 《Monatshefte für Chemie / Chemical Monthly》2006,137(8):1071-1074
Summary. A new procedure for the selective oxidation of alcohols to the corresponding aldehydes and ketones with potassium permanganate
supported on aluminum silicate at room temperature under solvent-free conditions and shaking is reported. 相似文献
4.
Microwave Assisted Selective Oxidation of Benzylic Alcohols with Calcium Hypochlorite under Solvent-Free Conditions 总被引:1,自引:0,他引:1
Mohammad M. Mojtahedi Mohammad R. Saidi Mohammad Bolourtchian Jafar S. Shirzi 《Monatshefte für Chemie / Chemical Monthly》2001,132(5):655-658
Summary. A remarkably fast microwave assisted selective oxidation of benzylic alcohols with calcium hypochlorite under solvent-free
conditions is described.
Received August 28, 2000. Accepted September 21, 2000 相似文献
5.
Babasaheb P. Bandgar Vaibhav S. Sadavarte Lavkumar S. Uppalla Suresh V. Patil 《Monatshefte für Chemie / Chemical Monthly》2003,134(3):425-428
Summary. Treatment of 3,4-dihydro-2H-pyran with various alcohols and phenols in the presence of a catalytic amount of anhydrous calcium chloride in dichloromethane
furnished tetrahydropyranyl ethers under almost neutral conditions.
Corresponding author. E-mail: bandgar_bp@yahoo.com
Received January 25, 2002; accepted (revised) March 20, 2002 相似文献
6.
7.
The selective oxidation of benzylic and allylic alcohols by tert. BuOOH was catalysed by cobalt complexes. 相似文献
8.
This paper describes the oxidation of benzylic and allylic alcohols under non-aqueous and aprotic conditions or microwave conditions using benzyltriphenylphosphonium chlorochromate (1) PhCH2PPh3CrO3.HCl which has been prepared by mixing an aqueous solution of benzyltriphenylphosphonium chloride with CrO3 in 6 N HCl at room temperature. This reagent is stable orange powder which may be stored for months without loss of its activity. This compound is readily soluble in organic solvents such as acetonitrile, chloroform and dichloromethane and slightly soluble in carbon tetrachloride, ether and hexane. the oxidation under microwave conditions is much more faster. 相似文献
9.
Rahman Hosseinzadeh Maryam Mohadjerani Mahmood Tajbakhsh Mahboobe Nouzarian 《合成通讯》2013,43(12):1725-1732
Hexamethylenebis (N-methylimidazolium) dichlorochromate was easily prepared by addition of N-methylimidazole to 1,6-dibromohexane to form the corresponding dibromide salt and subsequent treatment with CrO3 in 6 N HCl solution. It is a low-melting orange salt that selectively oxidized benzylic alcohols.
10.
The aerobic oxidation of benzylic alcohols to their corresponding aldehydes was performed in a RuCl3 · 3H2O–dicyclohexylamine (DCHA) catalyst system under ambient atmosphere at room temperature. It is noteworthy that the RuCl3 · 3H2O–DCHA system displayed a preference for the primary versus secondary benzylic alcohols in both intermolecular and intramolecular competition experiments. 相似文献
11.
A simple and readily available oxidation of primary allylic and benzylic alcohols to the corresponding aldehydes is carried out by sodium bismuthate in acetic acid. 相似文献
12.
Different types of alcohols and phenols are tetrahydropyranylated in the presence of NBS catalyst in good to excellent yields under mild, neutral and solvent‐free conditions. 相似文献
13.
Zorica Bugarcěić Slobodan Novokmet Zěeljko Senić Zěivadin Bugarcěić 《Monatshefte für Chemie / Chemical Monthly》2000,131(7):799-802
Summary. Carbonyl compounds of the type XPhCOR (R = H, Me, Ph; X = H, Me, Cl, Br) are prepared in high yields by reaction of the corresponding benzylic alcohols XPhCHOHR with KNa4 [Ag(HIO6)2]×12H2O in alkaline solution. This method allows the selective oxidation of benzylic alcohols in compounds containing other types
of alcoholic functional groups.
Received January 18, 2000. Accepted (revised) February 23, 2000 相似文献
14.
BiBi Fatemeh Mirjalili Mohamad Ali Zolfigol Abdolhamid Bamoniri Amin Zarei 《Phosphorus, sulfur, and silicon and the related elements》2013,188(8):1845-1849
A combination of silica sulfuric acid and sodium dichromate dihydrate in the presence of wet SiO 2 were used as an effective oxidizing agent for the oxidation of alcohols to their corresponding aldehyde or ketone derivatives in dichloromethane or toluene with excellent yields. 相似文献
15.
Selective Silylation of Alcohols,Phenols and Oximes Using N‐Chlorosaccharin as an Efficient Catalyst under Mild and Solvent‐Free Conditions 下载免费PDF全文
Efficient silylation of OH group in alcohols, phenols and oximes is described using a catalytic amount of N‐chlorosaccharin and hexamethyldisilazane (HMDS) under mild and solvent‐free conditions. This silylation reaction can be carried out with excellent and interesting various selectivities. 相似文献
16.
A combination of iodic acid with ammonium dichromate in the presence of wet SiO2 was used as an efficient oxidizing agent for the transformation of benzyl alcohols to the corresponding aldehydes and ketones in n-hexane or without a solvent at room temperature with excellent yields. 相似文献
17.
相转移催化下双媒质体系对醇类的选择性间接电氧化 总被引:5,自引:0,他引:5
在相转移催化剂(Bu4NHSO4)作用下,用Cr(Ⅵ)/Cr(Ⅲ)及Ag(Ⅱ)/Ag(Ⅰ)双媒质体系对醇类进行间接电氧化,产率为75.4~97.5%,电流效率达60.2~75.8%,双媒质体系可重复使用。 相似文献
18.
聚乙烯是最大的合成塑料产品,其化学惰性导致难以降解.最近,黄正、管志斌等报道了交叉烷烃复分解方式进行的聚乙烯温和可控降解.使用价廉量大的低碳烷烃(如石油醚)作为反应试剂和溶剂,不同类型的聚乙烯均可实现降解.并且可以通过催化剂和反应的时间的调控,选择性生成燃油或聚乙烯蜡. 相似文献
19.
Yang‐Heon Song 《合成通讯》2013,43(5):631-635
Selective oxidation of benzylic, allylic, and saturated secondary alcohols to the corresponding aldehydes or ketones by benzyldimethyltelluronium dichromate is described. 相似文献
20.
Summary. A new reagent, potassium permanganate adsorbed on aluminum silicate, suitable for the oxidation of primary and secondary alcohols to the corresponding carbonyl compounds is described. 相似文献