26224-40-8Relevant articles and documents
Isolation of Dithiolanylium Salts and Their Conversion to Ketene Dithioacetals and Ortho Esters
Okuyama, Tadashi,Fujiwara, Wataru,Fueno, Takayuki
, p. 453 - 456 (1986)
Various 2-substituted 1,3-dithiolan-2-ylium perchlorates (1) were prepared by the reaction of 1,2-ethanedithiol with acyl chlorides in the presence of perchloric acid.Treatments of 1 with triethylamine gave 2-alkylidene-1,3-dithiolane (2) when the 2-substituent was a primary or secondary alkyl group. 2-Aryl derivatives of 1 were converted to ortho esters by the reaction with methanol in the presence of silver nitrate. 1,3-Dithian-2-ylium perchlorates and 2-alkylidene-1,3-dithianes were also prepared similarly from 1,3-propanedithiol.
2,4,6-Trichloro-1,3,5-triazine catalyzed chemoselective transthioacetalization of aldehyde acetals and oxathioacetals
Bandgar, Babasaheb P.,Joshi, Neeta S.,Bettigeri, Sampada V.
, p. 67 - 71 (2007/10/03)
A mild and efficient transthioacetalization of aldehyde acetals and oxathioacetals was carried out using 2,4,6-trichloro-1,3,5-triazine as a mild and inexpensive catalyst. Chemoselective transacetalization is impressive as aldehyde O,O- and O,S-acetals ar
Fulvenes with Inverse Ring Polarization, 10. Electron Rich Heptafulvenes
Bauer, Walter,Betz, Ingrid,Daub, Joerg,Jakob, Lothar,Pickl, Wolfgang,Rapp, Knut M.
, p. 1154 - 1173 (2007/10/02)
The synthesis and structural properties of the electron rich heptafulvenes 3a - f are described.The compounds 3 have electron donor substituents at C-8.In the case of 3f NMR-spectroscopy revealed the presence of a boat conformation with bond alternation.H
