US PATENT SUBCLASS 548 / 175
.~.~.~.~.~.~.~.~ Process of forming the bicyclo ring system


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

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {1}
*  DD  .~ HETEROCYCLIC CARBON COMPOUNDS CONTAINING A HETERO RING HAVING CHALCOGEN (I.E., OXYGEN, SULFUR, SELENIUM, OR TELLURIUM) OR NITROGEN AS THE ONLY RING HETERO ATOMS (Class 540, subclass 1) {4}
100  DF  .~.~ Hetero ring is five-membered having two or more ring hetero atoms of which at least one is nitrogen (e.g., selenazoles, etc.) {18}
146  DF  .~.~.~ 1,3-thiazoles (including hydrogenated) {7}
148  DF  .~.~.~.~ Polycyclo ring system having the thiazole ring as one of the cyclos {3}
152  DF  .~.~.~.~.~ Bicyclo ring system having the thiazole ring as one of the cyclos {8}
165  DF  .~.~.~.~.~.~ Chalcogen bonded directly to ring carbon of the thiazole ring {5}
174  DF  .~.~.~.~.~.~.~ Sulfur double bonded or thiol bonded directly to ring carbon of the thiazole ring {2}
175.~.~.~.~.~.~.~.~ Process of forming the bicyclo ring system {1}
176  DF  .~.~.~.~.~.~.~>.~.~ Aniline or alkyl derivative thereof utilized as starting material


DEFINITION

Classification: 548/175

(under subclass 174) Processes in which the bicyclo ring system is formed.

(1) Note. Included herein are processes of forming the bicyclo ring system by any means e.g., ring enclosure, ring expansion, etc.