water; Amberlyst.(R). 15 T=22°C; 1.5 h; Inert atmosphere; Product distribution / selectivity;

1: 3-(2-methoxypropan-2-yloxy)prop-1-yne With ammonia; lithium; isoprene T=-37°C; 1.5 h; 2: ethyl iodide 1.5 h;

1: 3-(2-methoxypropan-2-yloxy)prop-1-yne With piperylene; ammonia; lithium T=-37°C; 1.5 h; 2: ethyl bromide 1.5 h; Product distribution / selectivity;