摘要: 研究了采用固体酸SnCl4·5H2O/C为催化剂,由乙酸与正丁醇反应合成乙酸正丁酯的最佳合成条件,结果表明,当n乙酸 : n正丁醇 = 1:1.5,催化剂用量为10%(重量),反应时间为2 h时,酯的产率可达93%.该工艺产率高,反应时间短,无腐蚀无污染.关键词:...
Oxidative-aromatization of Hantzsch ester 1,4-dihydropyridines by KBrO3/SnCl4 center dot 5H(2)O under mild conditionBehzad ZeynizadehKarim Akbari DilmaghaniAsli RoozijoyB. Zeynizadeh, K.A. Dilmaghani, A. Roozijoy, Synth. Commun. 35 , 557 (2005) View Article...
Hydrolytic stability of SnCl4 and GaCl3 in the formation of [cis-SnCl4(H2O)2] center dot 18-crown-6 center dot 2H(2)O and [[2,2,2]cryptand+2H(+)][GaCl4](2) The combination of anhydrous SnCl4 with 18-crown-6 in aqueous conditions results in formation of the non-hydrolysed pro...
摘要: 4(3H)-Quinazolinones have been synthesized in high to excellent yields through the one-pot condensation of anthranilic acid, trimethyl orthoformate and primary amines in the presence of SnCl4.4H(2)O and KNO3 in acetonitrile.年份: 2007 ...
Crystal Structures and Raman Spectra of cis‐[SnCl4(H2O)2]·2H2O, cis‐[SnCl4(H2O)2]·3H2O, [Sn2Cl6(OH)2(H2O)2]·4H2O, and [HL][SnCl5(H2O)]·2.5H2O (L=3‐a... The complexes cis -[SnCl 4 (H 2 O) 2 ]·2H 2 O ( 1 ), [Sn 2 Cl 6 (OH) 2 (H 2 O) 2 ]...
text>Compound Zn2Sn0.8Ti0.2O4 was synthesized by a hydrothermal method in which SnCl4 center dot 5H(2)O, TiCl4, ZnCl2 and N2H4 center dot H2O were used as ... WS Yuan,YW Tian,JZ Liu - 《Transactions of Nonferrous Metals Society of China》 被引量: 3发表: 2012年 加载更多来源...
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Zeynizadeh B, Dilmaghani K A, Rooziioy A. Oxidative-Aromatization of Hantzsch Ester 1, 4-Dihydropyridines by KBrO3/SnCl4 · 5H2O Under Mild Condition [J]. Synth Commun, 2005, 35: 557- 562.Behzad Z,Karim A D,Asli R.Oxidative-aromatization of hantzsch ester 1, 4-dihydropyridine by ...
Different kinds of Hantzsch ester 1,4-dihydropyridines were oxidatively aromatized to their corresponding pyridine derivatives by KBrO_3/SnCl_4 centre dot 5H_2OO system in refluxing CH_3CN.The products were obtained in high to excellent yields.Aromatization of Hantzsch ester 1,4-dihydropyrines...
Three thiostannates (H2en)2Sn2S6?en 1, (Hen)4Sn2S6 2 (en = ethylenediamine, a known compound) and [(H2hmda)3(Hhmda)2](Sn2S6)2 3 (hmda = hexamethylenediamine) were prepared using SnCl4?5H2O and S8 as starting materials in alkylenediamine solutions under mild solvothermal conditions...