FeBr2 in tetrahydrofuran 0.25 h; Ambient temperaturealso in the presence of 1,4-cyclohexadiene or methyl phenyl sulfide or hexamethyl Dewar benzene or tetralin; also FeCl2*4H2O or hemin plus benzyl mercaptan as reagents; var. solvents; Mechanism;
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Journal of the American Chemical Society, , vol. 117, # 21 p. 5885 - 5886
Yagen, Boris; Pu, Yu Ming; Yeh, Herman J. C.; Ziffer, Herman
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1994 , # 7 p. 843 - 846