US PATENT SUBCLASS 562 / 830
.~.~.~.~ Preparing utilizing thionyl halide or carbonyl dihalide (e.g., phosgene, etc.)

Current as of: June, 1999
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562 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {41}
821  DF  .~ Sulfur halides (i.e., compounds having halogen attached directly to sulfur by nonionic bonding) {5}
827  DF  .~.~ Chalcogen double bonded directly to the sulfur (e.g., sulfinyl halides, etc.) {1}
828  DF  .~.~.~ Plural chalcogens double bonded directly to the sulfur (e.g., sulfonyl halides, etc.) {6}
830.~.~.~.~ Preparing utilizing thionyl halide or carbonyl dihalide (e.g., phosgene, etc.)

DEFINITION

Classification: 562/830

(under subclass 828) Processes in which thionyl halide; i.e., halo-S(=O)-halo or a carbonyl dihalide; i.e., halo-C(=O)-halo is utilized.