2-bromo-3-methyl-1-trimethylsilylbut-2-en-1-ol,propanoic acid

4-bromo-2,3,3-trimethyl-5-trimethylsilylpent-4-enoic acid

2-(2-cyanoethyl)-3,3-dimethyl-5-trimethylsilylpent-4-ynoic acid

4-methoxycarbonyl-5,5-dimethylhept-6-ynoate