Methyl cyanoformate

Methyl cyanoformate is the organic compound with the formula CH₃OC(O)CN. It is used as a reagent in organic synthesis as a source of the methoxycarbonyl group,^[1] in which context it is also known as Mander's reagent. When a lithium enolate is generated in diethyl ether or methyl t-butyl ether, treatment with Mander's reagent will selectively afford the C-acylation product.^[1] Thus, for enolate acylation reactions in which C- vs. O-selectivity is a concern, methyl cyanoformate is often used in place of more common acylation reagent like methyl chloroformate.

Methyl cyanoformate

Names
Preferred IUPAC name Methyl carbonocyanidate
Identifiers
CAS Number	17640-15-2 Y
3D model (JSmol)	Interactive image
ChemSpider	26657 Y
ECHA InfoCard	100.037.826
PubChem CID	28660
UNII	7S9M7F9JLT Y
CompTox Dashboard (EPA)	DTXSID1066235
InChI InChI=1S/C3H3NO2/c1-6-3(5)2-4/h1H3 Y Key: OBWFJXLKRAFEDI-UHFFFAOYSA-N Y InChI=1/C3H3NO2/c1-6-3(5)2-4/h1H3 Key: OBWFJXLKRAFEDI-UHFFFAOYAH
SMILES N#CC(=O)OC
Properties
Chemical formula	C3H3NO2
Molar mass	85.06
Appearance	colorless liquid
Density	1.072 g/cm3
Boiling point	100 to 101 °C (212 to 214 °F; 373 to 374 K)
Hazards
Occupational safety and health (OHS/OSH):
Main hazards	toxic
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is YN ?) Infobox references

Methyl cyanoformate is also an ingredient in Zyklon A. It has lachrymatory effects.^[2]