The cover picture shows the Japanese famous inverted image of Mt. Fuji (reflected in the water). The scheme shows the general catalytic cycle of the transition-metal-catalyzed cyclization of alkynals via oxametallacycle intermediates. This cyclization is a highly efficient method for the stereoselective synthesis of carbocycles and heterocycles. This reaction is catalyzed by Ni, Rh, Ru, and Ti complexes and mediated by organometalloid reagents (X-Y = Si-H, B-C), organometallic reagents (X-Y = Zn-C), dihydrogen (X-Y = H-H), and org. reagents (X-Y = C-H, C-P). Details are presented in the Microreview by K. Tanaka and Y. Tajima on p. 3715 ff. [on SciFinder(R)]
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