2-Methoxypropene is an ether with the chemical formula C4H8O.

It is a reagent used in organic synthesis to introduce a protecting group for alcohols,[1] and the conversion diols to the acetonide group.

[3] 2-Methoxypropene can be prepared by the elimination of methanol from dimethoxypropane,[4] or by the addition of methanol to propyne or allene.

[5]