US 12,404,448 B2
Dihydroquinoline photochromic compounds
Robert W. Walters, Murrysville, PA (US); Jun Deng, Mars, PA (US); and Shengwen Yuan, Northbrook, IL (US)
Assigned to Transitions Optical, Ltd., Tuam (IE)
Appl. No. 17/763,713
Filed by TRANSITIONS OPTICAL, LTD., Tuam (IE)
PCT Filed Sep. 27, 2019, PCT No. PCT/EP2019/076256
§ 371(c)(1), (2) Date Mar. 25, 2022,
PCT Pub. No. WO2021/058114, PCT Pub. Date Apr. 1, 2021.
Prior Publication US 2022/0333004 A1, Oct. 20, 2022
Int. Cl. C09K 9/02 (2006.01); C07D 215/06 (2006.01); G02C 7/10 (2006.01)
CPC C09K 9/02 (2013.01) [C07D 215/06 (2013.01); C09K 2211/1018 (2013.01); G02C 7/102 (2013.01)] 14 Claims
 
1. A photochromic compound having a core fused ring structure represented by at least one of the following Formula (Ia) or Formula (IIa),

OG Complex Work Unit Chemistry
wherein independently for Formula (Ia) and Formula (IIa),
R1 is in each case independently selected from substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, —SO2R5, or —C(O)—XR5, wherein,
X is selected from a single bond, —N(R5)—, or —O—, and
R5 in each case is independently selected from hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted aryl, or substituted or unsubstituted heteroaryl, and
B and B′ are each independently selected from substituted or unsubstituted alkenyl, substituted or unsubstituted alkynyl, substituted or unsubstituted aryl, or substituted or unsubstituted heteroaryl.