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You are using Science Of Synthesis as a Guest.
Please login or sign up for a free trial to access the full content. Method 4: Cyclization of 4-Diazoalk-2-en-1-ones

DOI: 10.1055/sos-SD-009-00244

König, B.Science of Synthesis, (20019206.

(Z)-4-Diazoalk-2-en-1-ones 112, on treatment with rhodium catalysts, yield furans 113.[‌183‌‌187‌] The reaction is likely to proceed via an intermediate rhodiumcarbene complex. The reaction has also been employed for the synthesis of benzofurans.[‌188‌]

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