α‐Diazo‐4‐methoxy‐β‐oxobenzenepropanenitrile

[126893-72-9] C10H7N3O2 (MW 201.18) InChI = 1S/C10H7N3O2/c1-15-8-4-2-7(3-5-8)10(14)9(6-11)13-12/h2-5H,1H3 InChIKey = SSRJRWKNAOEFFT-UHFFFAOYSA-N (used as a carbene precursor for Rh(II)-catalyzed cyclopropanation of alkenes to form α-cyano-cyclopropylketones, and for the formation of 5-halo-1,2,3-triazoles) Alternative Name: none. Physical Data: mp 62 °C, yellow solid. Solubility: soluble in CH2Cl2, CHCl3, THF, DMF, MeCN. Slightly soluble in Et2O. Form Supplied in: not commercially available. Purification: silica gel chromatography, using 80% CHCl3 in hexane as eluent. Handling, Storage, and Precautions: the compound is potentially explosive and should be stored neat at −20 °C, at which it is stable for at least 12 months.