- Synthesis of Squaric Acid Derivatives by Lewis Acid-catalysed Reaction of its Dichloride, Methyl Ester Chloride, Diethylamide Chloride, and Ethyl Diester with Unsaturated Organosilanes: New Method for C-C Bond Formation on Cyclobutenedione
-
The squaric acid family of derivatives, e.g. dichloride 2, methyl ester chloride 3, diethyl amide chloride 4, and ethyl diester 5, reacted with a variety of unsaturated organosilanes 6 in the presence of a catalyst, typically titanium tetrachloride, at -7
- Ohno, Masatomi,Yamamoto, Yoshihiko,Shirasaki, Yuhichi,Eguchi, Shoji
-
p. 263 - 272
(2007/10/02)
-
- Catalysed 1,2- vs. 1,4-Addition of 3,4-Dichlorocyclobut-3-ene-1,2-dione with Unsaturated Organosilanes
-
3,4-Dichlorocyclobut-3-ene-1,2-dione (squaric acid chloride) reacts with allylsilanes and silyl enol ethers in the presence of TiCl4 at C-1 and/or C-4, depending on the substitution pattern of the organosilane.
- Ohno, Masatomi,Yamamoto, Yoshihiko,Eguchi, Shoji
-
p. 2272 - 2273
(2007/10/02)
-