Ethoxy-2-trimethylsilylacetylene

Trimethylsilyl-3-rnethylthio-l-propyne, 54 - (32) Trimethyl-silylacetylene, 55 - (32) Bis(trimethylsilyl)acetylene, 56 - (33) 1--Ethoxy-2-trimethylsilylacetylene, 57 - (34) 3-Trimethylsilyl-2 -propyn--l-ol, 58 - (35) 2-Butynoic acid, 59 - (3S) Methyl-1-propynyl sulfoxide,... 

Norbornadienes, norbornenones and their homologs have been prepared [23, 24] by cycloaddition of cyclopentadiene (21) and cyclohexadiene (22) with l-benzenesulfonyl-2-trimethylsilylacetylene (23) and l-ethoxy-2-carbomethox-yacetylene (24). Both were efficient dienophiles in the cycloaddition processes and dienophile 23 acted as an effective acetylene equivalent (Scheme 2.12). Norbornanes and their homologs can also be attained by Diels-Alder reaction... 

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