Following is one of the patent documents most requested by researchers using CAS electronic products.
|
CAS indexed 13 chemical substances from this document.
CAS subject entries for this document include: Amines, preparation; Amination; Epoxides. | |
CAPLUS COPYRIGHT 2006 ACS on STN
| TITLE:
| A process for preparing diaminocyclohexenecarboxylates from 7-oxabicyclo[4.1.0]heptenecarboxylates |
| INVENTOR(S):
| Brown, Jack D.; Harrington, Peter J.; Hughes, Robert C. |
| PATENT ASSIGNEE(S):
| USA |
| SOURCE:
| U.S. Pat. Appl. Publ., 15 pp. CODEN: USXXCO |
| LANGUAGE:
| English |
PATENT INFORMATION: PATENT NO. KIND DATE APPLICATION NO. DATE
--------------- ---- -------- -------------------- --------
US 2004180933 A1 20040916 US 2003-388064 20030313
CA 2517458 AA 20040923 CA 2004-2517458 20040310
WO 2004080944 A1 20040923 WO 2004-EP2428 20040310
W: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH,
CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD,
GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC,
LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NI,
NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SY,
TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW
RW: BW, GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZM, ZW, AM, AZ,
BY, KG, KZ, MD, RU, TJ, TM, AT, BE, BG, CH, CY, CZ, DE, DK, EE,
ES, FI, FR, GB, GR, HU, IE, IT, LU, MC, NL, PL, PT, RO, SE, SI,
SK, TR, BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN,
TD, TG
EP 1606242 A1 20051221 EP 2004-718940 20040310
R: AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LI, LU, NL, SE, MC, PT,
IE, SI, LT, LV, FI, RO, MK, CY, AL, TR, BG, CZ, EE, HU, PL, SK
ABSTRACT:
The invention provides a multi-step process for prepg. 1,2-diamino compds. of formula I [wherein: R1, R2, R5, R6 are independently selected from H, alk(en/yn)yl, cycloalkyl, or aryl, etc.; R3 and R4 are substituents of an amino group, wherein R3 and R4 are not both H] from epoxide II. For instance, diaminocyclohexenecarboxylate deriv. III was prepd. from oxabicycloheptene deriv. IV (example 1). The invention provides a process of azide-free prepn. of 1,2-diamino compds. from 1,2-epoxides.
Updated 5/11/2007 1:23:06 PM
