US 11,981,648 B2
Method for the synthesis of 3-R-1,4,2-dioxazol-5-ones
David S. Hall, Halifax (CA); Jeffery Raymond Dahn, Halifax (CA); and Toren Hynes, Oyster Pond (CA)
Assigned to Tesla, Inc., Austin, TX (US); and Panasonic Holdings Corporation, Osaka (JP)
Filed by Tesla, Inc., Austin, TX (US)
Filed on Jun. 30, 2022, as Appl. No. 17/855,414.
Application 17/855,414 is a division of application No. 16/440,584, filed on Jun. 13, 2019, granted, now 11,384,058.
Prior Publication US 2023/0029852 A1, Feb. 2, 2023
Int. Cl. C07D 273/01 (2006.01); C07D 413/04 (2006.01)
CPC C07D 273/01 (2013.01) [C07D 413/04 (2013.01)] 23 Claims
 
1. A composition comprising:
a first organic solvent;
a hydroxamic acid;
an R-substituted acyl chloride;
N,N′-carbonyldiimidazole; and
a 3-R-1,4,2-dioxazol-5-one compound.