150372-43-3Relevant academic research and scientific papers
Lutetium triflate as an efficient and recyclable catalyst for chemoselective thioacetalization of aldehydes
De, Surya Kanta
, p. 4401 - 4408 (2004)
Lutetium Inflate has been found to be an efficient and recyclable catalyst for chemoselective thioacetalization of aldehydes.
PhIO-Mediated oxidative dethioacetalization/dethioketalization under water-free conditions
Du, Yunfei,Ouyang, Yaxin,Wang, Xi,Wang, Xiaofan,Yu, Zhenyang,Zhao, Bingyue,Zhao, Kang
, p. 48 - 65 (2021/06/16)
Treatment of thioacetals and thioketals with iodosobenzene in anhydrous DCM conveniently afforded the corresponding carbonyl compounds in high yields under water-free conditions. The mechanistic studies indicate that this dethioacetalization/dethioketalization process does not need water and the oxygen of the carbonyl products comes from the hypervalent iodine reagent.
Ruthenium(III) chloride-catalyzed thioacetalization of carbonyl compounds: Scope, selectivity, and limitations
De, Surya Kanta
, p. 673 - 676 (2007/10/03)
A variety of carbonyl compounds can be easily and rapidly converted to the corresponding cyclic and acylic dithioacetals in the presence of a catalytic amount of ruthenium chloride in acetonitrile at room temperature. Some of the major advantages of this
Scandium Chloride-Catalyzed Chemoselective Thioacetalization of Aldehydes
De, Surya Kanta
, p. 828 - 830 (2007/10/03)
A wide variety of acyclic and cyclic dithioacetals can be prepared chemoselectively from the corresponding aldehydes by employing a catalytic amount of scandium chloride in acetonitrile at room temperature.
Neodymium triflate as a recyclable catalyst for chemoselective thioacetalisation
De, Surya Kanta
, p. 230 - 231 (2007/10/03)
Neodymium triflate has been found to be an efficient and recyclable catalyst for the chemoselective protection of aldehydes.
Chemoselective thioacetalisation and transthioacetalisation of carbonyl compounds catalysed by tetrabutylammonium tribromide (TBATB)
Naik, Sarala,Gopinath, Rangam,Goswami, Mousumi,Patel, Bhisma K.
, p. 1670 - 1677 (2007/10/03)
Thioacetals and thioketals of various aldehydes and ketones were obtained directly from carbonyl compounds or by a transthioacetalisation process from cyclic O,O-acetals in the presence of dithiols and a catalytic amount of tetrabutylammonium tribromide (TBATB). Chemoselective thioacetalisation of aromatic aldehydes containing an electron-donating group in the presence of an aldehyde containing an electron-withdrawing group, aldehydes in the presence of ketones, aliphatic cyclic ketones in the presence of aromatic ketones and less hindered ketones in the presence of more hindered ketones have been achieved. A cyclic acetal containing an electron-donating group has been chemoselectively transthioacetalised in the presence of an acetal having an electron-withdrawing substituent. These selectivities are due to the intrinsic reactivity of the substrate themselves and are independent of the catalyst and reaction conditions, Shorter reaction times, mild reaction conditions, stability of acid sensitive protecting groups, high efficiencies, facile isolation of the desired products and the catalytic nature of the reagent are the attractive features of the present method.
Selective thioacetalization of aldehydes catalyzed by aqueous zinc tetrafluoroborate
Islam, Samimul,Majee, Adinath,Mandal, Tanmay,Khan
, p. 2911 - 2916 (2007/10/03)
A wide range of cyclic dithioacetals are prepared from the corresponding aldehydes in the presence of aqueous solution of zinc tetrafluoroborate.
Nickel(II) chloride as an efficient and useful catalyst for chemoselective thioacetalization of aldehydes
Khan, Abu T.,Mondal, Ejabul,Sahu, Priti R.,Islam, Samimul
, p. 919 - 922 (2007/10/03)
A wide variety of acyclic and cyclic dithioacetals can be prepared chemoselectively from the corresponding aldehydes by employing a catalytic amount of nickel(II) chloride in dry CH2Cl2-MeOH (5:1) at room temperature in good yields.
Efficient hydrolysis of dithioacetals by the N-fluoro-2,4,6-trimethylpyridinium triflate-water system
Kiselyov,Strekowski,Semenov
, p. 2151 - 2158 (2007/10/02)
Dithioacetals including 1,3-dithianes and 1,3-dithiolanes are efficiently cleaved by the title reagent system to the parent carbonyl compounds. The cleavage of diprotected symmetrical α-diketones and p-phenylenediketones gives monoketones in good yields. Amide, 1,3-dioxolane, disulfide, ester, ether, hydroxy, nitrile, nitro, and sulfide functions are relatively stable under the cleavage conditions but thiols are oxidized to disulfides.
