106592-05-6Relevant academic research and scientific papers
2,4,4,6-Tetrabromo-2,5-cyclohexadienone (TABCO), N-bromosuccinimide (NBS) and bromine as efficient catalysts for dithioacetalization and oxathioacetalization of carbonyl compounds and transdithioacetalization reactions
Iranpoor, Nasser,Firouzabadi, Habib,Shaterian, Hamid Reza,Zolfigol
, p. 1047 - 1071 (2007/10/03)
The use of 2,4,4,6-tetrabromo-2,5-cyclohexadienone (TABCO), N-bromosuccinimide (NBS), and bromine as efficient catalysts for conversion of carbonyl compounds to their cyclic and acyclic dithioacetals and 1,3-oxathiolanes under mild reaction conditions are described. These catalysts are also used for efficient transdithioacetalization of acetals, diacetals, ketals, acylals, enamines, hydrazones, and oximes with high yields in the presence of thiols.
Molybdenum pentachloride (MoCl5) catalyzes efficient dithioacetalization of carbonyl compounds and transdithioacetalization of O, O-acetals. This catalyst also conducts efficient non-hydrolytic deprotection of dithioacetals in the presence of dry DMSO. Part 2
Firouzabadi,Karimi
, p. 207 - 216 (2007/10/03)
Dithioacetalization of carbonyl compounds was performed efficiently in CH2Cl2 at room temperature in the presence of MoCl5. Highly selective transdithioacetalization of acetals was also catalyzed efficiently by this catalyst. MoCl5 performed non-hydrolytic deprotection of dithioacetals in the presence of dry DMSO.
Trichloroisocyanuric acid as a mild and efficient catalyst for thioacetalization and transthio-acetalization reactions
Firouzabadi,Iranpoor,Hazarkhani
, p. 1641 - 1643 (2007/10/03)
Trichloroisocyanuric acid (1), a cheap industrial chemical, catalyzes mild and efficient thioacetalization and transthioacetalization reactions. In addition, this catalyst is very selective for this purpose.
Zirconium tetrachloride (ZrCl4) catalyzed highly chemoselective and efficient transthioacetalization of acetals
Firouzabadi, Habib,Iranpoor, Nasser,Karimi, Babak
, p. 319 - 320 (2007/10/03)
Zirconium tetrachloride (ZrCl4) is an efficient catalyst for the highly chemoselective transthioacetalization of acetals under mild reaction conditions.
Thioacetalization of carbonyl compounds by zeolite HSZ-360 as a new, effective heterogeneous catalyst
Ballini, Roberto,Barboni, Luciano,Maggi, Raimondo,Sartori, Giovanni
, p. 767 - 772 (2007/10/03)
Thioacetal can be efficiently obtained at room temperature by simply dissolving the appropriate carbonyl compounds and 1,2-ethanedithiol, in dichloromethane, with zeolite HSZ-360 as a new heterogeneous catalyst. Satisfactory to good yields are obtained ev
