Diorganotin dihydrides reactions

An early example for the direct coupling of a tin reagent to Amberlite XE 305, a macroporous polystyrene, was reported by Crosby and coworkers157. The synthetic route is shown in Scheme 35. Reaction of the polymer-supported diorganotin dihydride 70 with iodooctane to give octane indicated a minimum content of 2 mmol tin hydride per gram of the polymer. 

The synthesis of tristannanes and linear tetrastannanes can be achieved in a straightforward manner by employing the hydrostannolysis reaction and diorganotin dihydrides (26) and 1,1,2,2-tetraorganodistannanes (9) according to Eq. (8) 49). As shown, this methodology can be used to... 

In an interesting extension of the above reactions, diorganotin dihydrides have been treated with amines to obtain cyclic polytin compounds 159,188, 192, 194a, 236, 236b, 236c). In one reported case 18S) a 94% yield of octadecaethylcyclononatin was obtained from diethyltin dihydride and a pyridine-diethyltin dichloride complex. It is apparently also possible to obtain straight-chain products with suitable reagents. 

A potentially quite useful synthetic method was recently reported by Sawyer and Kuivila 240-242), who treated diorganotin dihydrides with carboxylic acids to obtain functionally substituted ditin compounds. Thus, the reaction of dibutyltin dihydride with acetic acid leads to 1,2-diacetoxy-tetra-n-butylditin in 65% yield. 

I Reaction of diorganotin dihydride with bis(tributyltin)sulfide,... 

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