Journal
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
Volume 26, Issue 11, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejoc.202201380
Keywords
allylation; allyltrimethylsilane; azadiene; boron; Michael addition
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A metal-free 1,4-allylation of azadienes with allyltrimethylsilanes catalyzed by B(C6F5)(3) has been developed. The high Lewis acidity, good thermal stability, and good hydrolytic stability of the catalyst make this reaction efficient and operationally simple. Benzofuran-, indene-, dihydronaphthalene-, chromene-, and benzothiophene-based allyl arylmethanes have been obtained in up to 95% yield.
A metal-free 1,4-allylation of azadienes with allyltrimethylsilanes catalyzed by B(C6F5)(3) has been developed. The high Lewis acidity, good thermal stability, and good hydrolytic stability of the catalyst make this reaction efficient and operationally simple. In contrast to the previously reported 1,2-allylation of alpha,beta-unsaturated imines, the 1,4-allylation of azadienes is described here for the first time. Benzofuran-, indene-, dihydronaphthalene-, chromene-, and benzothiophene-based allyl arylmethanes have been obtained in up to 95 % yield.
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