Intramolecular formal [4+2] cycloaddition of 3-ethoxycyclobutanones and alkenes.
نویسندگان
چکیده
Intramolecular formal [4+2] cycloaddition between 3-ethoxycyclobutanones and a carbon-carbon double bond to the corresponding bicyclo[4.n.0]alkan-2-one derivatives proceeded effectively by using ethylaluminium dichloride.
منابع مشابه
Synthesis of multisubstituted phenols by formal [4 + 2] cycloaddition of nucleophilic alkynes with 3-ethoxycyclobutanones.
Nucleophilic alkynes bearing sulfonamide, trimethylsilyl, or p-methoxyphenyl groups at the sp carbon reacted with 3-ethoxycyclobutanones to give formal [4 + 2] cycloadducts by activation with TiCl4. Reactions with 2-monoalkyl and 2-nonsubstituted 3-ethoxycyclobutanones gave phenol derivatives directly by benzannulation, while the use of 2,2-dimethyl-3-ethoxycyclobutanone gave the corresponding ...
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ورودعنوان ژورنال:
- Chemical communications
دوره 46 6 شماره
صفحات -
تاریخ انتشار 2010