| 15049656 |
Brana P, Gimeno J, Sordo JA: Unusual intramolecular [2 + 2] cycloaddition of allyl and vinylidene C=C bonds under mild conditions: a theoretical analysis. J Org Chem. 2004 Apr 2;69(7):2544-50.
The reaction takes place by heating in dichloromethane the vinylidene complexes [Ru ((eta (5),eta (3)-C (9) H (7))[=C=C (R) H][kappa (1)-(P)-PPh (2)(C (3) H (5))](PPh ( 3))][BF (4)] (R = Ph, p-Me-C (6) H (4)) (1) yielding the bicyclic alkylidene complexes [Ru ((eta (5),eta (3)-C (9) H (7))[kappa (2)-(P,C)-(=CC (R) HCH (2) CHCH (2)-PPh (2)](P Ph (3))][BF (4)] (2). |
31(0,1,1,1) |
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