Alkoxystyrene derivatives

The even more strained alkylidene cycloproparenes gave rise to the same kind of G-complex intermediate with silver ion. In the presence of alcohol, trapping of this intermediate occurred, leading to alkoxystyrene derivatives. Water could also act in the same way, yielding arylmethylketones after keto-enol equilibration. However, if a proton was present on the alkylidene moiety, H shift occurred, leading to an arylalkyne. No dimerization was observed in this case, probably due to steric constraints in such a process (Scheme 3.17).31... 

Some of block copolymers with styrene derivatives are also amphiphilic, such as methyl vinyl ether-p-alkoxystyrene [88] and alkyl vinyl ether-p-hydroxystyrene (from p-r-butoxystyrene) [89] (Fig. 6). 

S Cascade reactions implementing the Ritter reaction Recent examples of the Ritter reaction have combined this useful synthetic tool with other reactions and rearrangements to produce complex reaction sequences. For example, Bishop has reported the combination of the Ritter reaction with the Wagner-Meerwein rearrangement, which can result in complex and sometimes unpredictable reaction sequences.17 The use of the Ritter reaction to trap cationic intermediates in the CAN-mediated dimerization of alkoxystyrenes has recently allowed the synthesis of a-aminotetralin derivatives by Nair.18... 

Syntheses with boranes and acetylene derivs. Allyl-type rearrangement a-Alkoxystyrenes from alkoxyacetylenes... 

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