:2-Methoxypropene

{{Chembox

| ImageFileL1 = 2-Methoxypropene skeletal.svg

| ImageSizeL1 = 80px

| ImageFileR1 = 2-Methoxypropene.svg

| ImageSizeR1 = 120px

| PIN = 2-Methoxyprop-1-ene

| OtherNames = Methyl isopropenyl ether
Isopropenyl methyl ether

|Section1={{Chembox Identifiers

| CASNo = 116-11-0

| CASNo_Ref = {{cascite|correct|CAS}}

| UNII_Ref = {{fdacite|correct|FDA}}

| UNII = 15WBG0JT6B

| PubChem = 8300

| ChemSpiderID = 7999

| SMILES = CC(=C)OC

| InChI = 1/C4H8O/c1-4(2)5-3/h1H2,2-3H3

| InChIKey = YOWQWFMSQCOSBA-UHFFFAOYAD

| StdInChI = 1S/C4H8O/c1-4(2)5-3/h1H2,2-3H3

| StdInChIKey = YOWQWFMSQCOSBA-UHFFFAOYSA-N

}}

|Section2={{Chembox Properties

| C=4 | H=8 | O=1

| Appearance = Colorless liquid{{cite book | doi = 10.1002/047084289X.rm124 | chapter = 2-Methoxypropene | title = Encyclopedia of Reagents for Organic Synthesis | year = 2001 | last1 = Whitaker | first1 = K. Sinclair | last2 = Whitaker | first2 = D. Todd | isbn = 0471936235}}

| Density = 0.753 g/mL[http://www.sigmaaldrich.com/catalog/product/ALDRICH/174645 2-Methoxypropene] at Sigma-Aldrich

| MeltingPt =

| BoilingPtC = 34 to 36

| BoilingPt_ref =

| Solubility =

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|Section3={{Chembox Hazards

| MainHazards =

| FlashPt =

| AutoignitionPt =

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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, and the conversion diols to the acetonide group.{{cite book | title = Protective Groups in Organic Synthesis | author1 = Theodora W. Greene | author2 = Peter G. M. Wuts | edition = 3rd | pages = 207–215}}

2-Methoxypropene can be prepared by the elimination of methanol from dimethoxypropane,{{cite journal | doi = 10.1021/jo00956a040 | title = Improved synthesis of 2-methoxypropene | year = 1973 | last1 = Newman | first1 = Melvin S. | last2 = Vander Zwan | first2 = Michael C. | journal = The Journal of Organic Chemistry | volume = 38 | issue = 16 | pages = 2910}} or by the addition of methanol to propyne or allene.{{cite journal | doi = 10.1007/BF00765172 | title = Kinetics of the catalytic synthesis of 2-methoxypropene | year = 1983 | last1 = Agré | first1 = B. A. | last2 = Taber | first2 = A. M. | last3 = Beregovykh | first3 = V. V. | last4 = Klebanova | first4 = F. D. | last5 = Nekrasov | first5 = N. V. | last6 = Sobolev | first6 = O. B. | last7 = Kalechits | first7 = I. V. | journal = Pharmaceutical Chemistry Journal | volume = 17 | issue = 3 | pages = 221| s2cid = 22506880 }}