1-bromo-4,4-dimethylpent-2-yne

4,4-dimethylpent-2-ynoic acid

3-(3,3-dimethylbut-1-ynyl)cyclohex-2-en-1-one

2,2-dimethyl-3-nonyne

[tert-butylethynyl](phenyl)iodonium tosylate