Strained cyclic alkyne-transition-metal

Transition-Metal Complexes of Arynes, Strained Cyclic Alkynes, and Strained Cyclic Cumulenes... 

Bennett MA, Schwemlein HP (1989) Angew Chem Int Ed Engl 28 1296 Buchwald SL, Broene RD (1995) In Abel EW, Stone EGA, Wilkinson G (eds) Hegedus LH (vol ed) Comprehensive organometallic chemistry 11, vol 12. Pergamon, Oxford, p 771 Jones WM,Klosin J (1998) Transition metal complexes of arynes, strained cyclic alkynes, and strained cyclic cumulenes. In Stone EGA, West R (eds) Adv Organomet Chem, vol 42. Academic, San Diego, p 147... 

Gomprehensive reviews of the chemistry of heavy allenes and cumulenes, heteroaldehyde, heteroketone, phosphaalkene " " and 77 -ketenyl (77 -G(PPh3)=GO) " complexes, which include platinum complexes, have been published. A review of transition metal complexes of arynes, strained cyclic alkynes, and strained cyclic cumulenes also includes information relative to this section. " ... 

Several reviews of the chemistry of strained cyclic alkynes and arynes and otiho-ztene cyclynes, " which include synthesis, structure, and reactivity of platinum complexes, have also appeared. The behavior of 1,4-enynes in the presence of transition metals has been reviewed. ... 

Jones, William M., and Klosin, Jerzy, Transition-Meted Complexes of Arynes, Strained Cyclic Alkynes, and Strained Cyclic Cumulenes. . . Joseph P. Morrall, Gulliver T. Dalton, Mark G. Humphrey and Marek Samoc, Organotransition Metal Complexes for Nonlinear Optics.. . . Jxmg, IL Nam, see Yoo, Bok Ryul... 

Ishikawa and coworkers have studied the unique reactivity of strained cyclic disilanes (Equation 9.11) [35]. Transition metals, especially those of Group 10, readily insert into the Si—Si bond of disilacyclobutene 118 and can catalyze the addition of that bond across a variety of unsaturated acceptors. In the case of Ni(0)-catalyzed reactions of 118 with trimethylsilyl alkynes, insertion was found to occur both in a 1,2-and in a 1,1-fashion. The latter of these pathways implies a 1,2-silyl-migration, presumably occurring at the metal center. A nickel vinylidene intermediate was therefore proposed, though efforts to prove its existence were inconclusive. Similar vinylidene intermediates have been proposed by Ishikawa and coworkers to account for migrations observed in related palladium- and platinum-catalyzed reactions [36]. 

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