Detail of "22037-28-1"

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CAS Number:
22037-28-1
Name:
3-Bromofuran
Molecular Structure:
Formula:
C₄H₃BrO
Molecular Weight:
146.97 .
Synonyms:
Furan, 3-bromo-;
EINECS:
244-744-6
Density:
1.662 g/cm³
Boiling Point:
103 °C at 760 mmHg
Flash Point:
3.3 °C
Appearance:
Colorless to light yellow liquid
Hazard Symbols:
F, Xi
Risk Codes:
11-36/37/38
Safety:
16-23-24/25-37/39-26-33-29-7/9 Details
Transport Information:
UN 1993 3/PG 2

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Reference

Furan and thiophene derivatives and their preparation and use as endothelin receptor antagonists: Furan and thiophene derivatives and their preparation and use as endothelin receptor antagonists. Elliott, John Duncan; Gao, Aiming; Xiang, Jia-ning (Smithkline Beecham Corporation; Elliott, John Duncan; Gao, Aiming; Xiang, Jia-Ning, USA). PCT Int. Appl. WO 9704769 A1 13 Feb 1997, 34 pp. DESIGNATED STATES: W: JP, US; RW: AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE. (English). (World Intellectual Property Organization). CODEN: PIXXD2. CLASS: ICM: A61K031-36. ICS: C07D407-02. APPLICATION: WO 1996-US12583 2 Aug 1996. PRIORITY: US 1995-1793 2 Aug 1995; US 1996-10983 1 Feb 1996. DOCUMENT TYPE: Patent CA Section: 27 (Heterocyclic Compounds (One Hetero Atom)) Section cross-reference(s): 1, 63 Novel furans and thiophene derivs. I, pharmaceutical compns. contg. I, and their use as endothelin receptor antagonists (no data) are described [wherein Z = (un)substituted 2- or 4-phenyl-3-furyl or -thienyl, 3-phenyl-2-furyl or -thienyl; P = CO2H or certain esters or amides, tetrazol-5-yl; R1 = H, alkyl; R2 = aryl, alkyl, acyl, (un)substituted cycloalkyl; n = 0-6]. Three synthetic examples and three formulations are given. For instance, 3-bromofuran was lithiated with LDA and formylated with DMF to give 41% 3-bromofuran-2-carboxaldehyde. This underwent Pd(PPh3)4-catalyzed arylation by 2-(methoxymethoxy)-4-methoxyphenylboronic acid (100%), and condensation with di-Et 2-(2-methoxy-4,5-methylenedioxybenzyl)malonate (36%), to give a 3-(furan-2-yl)-2-propenoate deriv. intermediate. Deprotection of the methoxymethyl ether group (41%), etherification of the resulting phenol with Me 2-(bromomethyl)benzoate and NaH (97%), and basic hydrolysis of the ester functions (47%), gave title compd. 22037-28-1 and 188114-23-0 are just another two chemicals used in this study. II. .

Detail of "22037-28-1"

3-Bromofuran

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