US PATENT SUBCLASS 558 / 116
.~.~.~.~.~ Reactant having halogen and -C(=X)-, wherein X is chalcogen, bonded directly to the same carbon (e.g., alpha halo carbonyl compounds, etc.)

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

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {21}
70  DF  .~ Phosphorus esters (i.e., compounds having the phosphorus ester group, wherein trivalent or pentavalent phosphorus and carbon are bonded directly to the same divalent chalcogen, and wherein the carbon may be single bonded to any atom but may be multiple bonded only to carbon) {18}
87  DF  .~.~ Processes {19}
89  DF  .~.~.~ Forming the phosphorus ester group {7}
115  DF  .~.~.~.~ Trivalent phosphorus converted into pentavalent phosphorus {1}
116.~.~.~.~.~ Reactant having halogen and -C(=X)-, wherein X is chalcogen, bonded directly to the same carbon (e.g., alpha halo carbonyl compounds, etc.)

DEFINITION

Classification: 558/116

(under subclass 115) Processes in which a reactant contains halogen and -C(=X)-, wherein X is chalcogen (i.e., oxygen, sulfur, selenium, or tellurium), bonded directly to the same carbon.

(1) Note. This subclass provides for processes which include Perkow-type reactions wherein an alpha - halo coabonyl compound is utilized as reactant.

(2) Note. An example of a process provided for herein is: [figure] [figure]