Cyclopropanes were obtained by the titanocene(II)-promoted reaction of thioacetals with vinyl pivalate. It was also found that vinycyclopropanes were produced by a similar treatment of thioacetals with the titanocene(II) species in the presence of 1,3-dienes. (C) 2004 Elsevier Ltd. All rights reserved.
Green, catalyst-free thioacetalization of carbonyl compounds using glycerol as recyclable solvent
作者:Gelson Perin、Luzia G. Mello、Cátia S. Radatz、Lucielli Savegnago、Diego Alves、Raquel G. Jacob、Eder J. Lenardão
DOI:10.1016/j.tetlet.2010.06.049
日期:2010.8
We describe herein the use of glycerol as an efficient and a recyclablesolvent in the thioacetalization of aldehydes and ketones. The catalyst-free reactions proceed easily usingglycerol at 90 °C and the corresponding thioacetals were obtained in good to excellent yields. Glycerol was recovered and utilized for further thioacetalization reactions.
A Mild Method for the Protection of Aldehydes as Dithioacetals and Dithiolanes Catalyzed by I<sub>2</sub>Generated<i>in Situ</i>Using Fe(NO<sub>3</sub>)<sub>3</sub>.9H<sub>2</sub>O/NaI Under Heterogeneous Conditions
作者:Amin Rostami、Heidar Ali Alavi Nik、Zahra Toodeh Roosta、Ardeshir Khazaei
DOI:10.1002/jccs.200900064
日期:2009.4
Structurally diverse aromatic aldehydes were thioacetalated in a clean and efficient reaction with ethane‐1, 2‐dithiol and thiophenol based on the use of I2 generated in situ from Fe(NO3)3.9H2O/NaI. The reaction occurs in good to high yield in dichloromethane at room temperature and the use of toxic and corrosive molecular iodine is avoided.
在使用Fe(NO 3)3 .9H 2 O / NaI原位生成的I 2的基础上,与乙烷-1、2-二硫醇和苯硫酚进行清洁高效的反应,将结构多样的芳族醛硫缩醛化。在室温下,该反应在二氯甲烷中以高产率高收率发生,避免了使用有毒和腐蚀性的分子碘。
General conjugate-addition method for the synthesis of enantiomerically pure lignans. Total synthesis of (-)- and (+)-burseran, (-)-dehydroxycubebin, (-)-trichostin, (-)-cubebin, (-)-5''-methoxyhinokinin, and (-)-hinokinin
作者:Nicola Rehnberg、Goeran Magnusson
DOI:10.1021/jo00301a026
日期:1990.7
Cocco, Maria Teresa; Plumitallo, Antonio; Secci, Mario, Gazzetta Chimica Italiana, 1981, vol. 111, # 11/12, p. 519 - 520
作者:Cocco, Maria Teresa、Plumitallo, Antonio、Secci, Mario
DOI:——
日期:——
REHNBERG, NICOLA;MAGNUSSON, GORAN, J. ORG. CHEM., 55,(1990) N4, C. 4340-4349