2-Hydroxybenzoxazole

• CAS: 59-49-4
• Catalog Number: ACM59494
• Category: Other Products
• Molecular Weight: 135.12
• Molecular Formula: C₇H₅NO₂
• Synonyms: Benzoxazole-2-ol; 3H-benzooxazol-2-one; benzoxazol-2-one; 2-oxo-2,3-dihydrobenzoxazole; USAF ek-5429; 2,3-dihydrobenzoxazol-2-one; Benzoxazolinone; 2-Benzoxazolol; 3H-benzoxazol-2-one; 2-BENZOXAZOLONE; BENZOXAZOLONE; 2-Benzoxaxolol
• IUPAC Name: 3H-1,3-benzoxazol-2-one
• InChI Key: ASSKVPFEZFQQNQ-UHFFFAOYSA-N
• Boiling Point: 299ºC at 760 mmHg
• Melting Point: 137-141ºC
• Flash Point: 160ºC
• Density: 1.323 g/cm³
• Appearance: Slightly beige powder.
• Exact Mass: 135.03200
• Hazard Statements: Xn:Harmful
• H-Bond Acceptor: 2
• H-Bond Donor: 1
• Safety Description: S24/25
• Stability: Stable under normal temperatures and pressures.
• WGK Germany: 3

Synthetic Use

Upstream Synthesis Route 1

• 89-73-6
• 22353-40-8

• 59-49-4
• 22353-38-4

Reference: [1] Tetrahedron Letters, 2016, vol. 57, # 52, p. 5877 - 5880

Downstream Synthesis Route 1

• 59-49-4

• 19932-85-5

Reference: [1] European Journal of Medicinal Chemistry, 2018, vol. 159, p. 104 - 125

Downstream Synthesis Route 2

• 59-49-4
• 77-48-5

• 19932-85-5

Reference: [1] Patent: US2002/55631, 2002, A1,

Downstream Synthesis Route 3

• 59-49-4
• 74-88-4

• 21892-80-8

Reference: [1]Siddiqui, Nida I.; Versiani, Muhammad A.; Jawaid, Khurshid; Shafique, Maryam; Hameed, Abdul; Ambreen, Nida; Karim, Aneela; Khan, Khalid M.
[Medicinal Chemistry, 2017, vol. 13, # 4, p. 384 - 390]

Downstream Synthesis Route 4

• 59-49-4

• 19932-84-4

Reference: [1]Mésangeau, Christophe; Narayanan, Sanju; Green, Andrea M.; Shaikh, Jamaluddin; Kaushal, Nidhi; Viard, Eddy; Xu, Yan-Tong; Fishback, James A.; Poupaert, Jacques H.; Matsumoto, Rae R.; McCurdy, Christopher R.
[Journal of Medicinal Chemistry, 2008, vol. 51, # 5, p. 1482 - 1486]
[2]Abdelazeem, Ahmed H.; Khan, Shabana I.; White, Stephen W.; Sufka, Kenneth J.; McCurdy, Christopher R.
[Bioorganic and Medicinal Chemistry, 2015, vol. 23, # 13, p. 3248 - 3259]
[3]Lespagnol
[Bulletin de la Societe Chimique de France, 1954, p. 393,934]
[4]Current Patent Assignee: UNIVERSITE CATHOLIQUE DE LOUVAIN; THE UNIVERSITY OF MISSISSIPPI - WO2009/26227, 2009, A2
Location in patent: Page/Page column 22
[5]Current Patent Assignee: HUNAN UNIVERSITY OF SCIENCE AND TECHNOLOGY - CN112174908, 2021, A
Location in patent: Paragraph 0082-0084

* For details of the synthesis route, please refer to the original source to ensure accuracy.