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Volumn 46, Issue 46, 2005, Pages 7899-7903

Deprotection of pinacolyl boronate esters via hydrolysis of intermediate potassium trifluoroborates

Author keywords

[No Author keywords available]

Indexed keywords

BORIC ACID; BORONIC ACID DERIVATIVE; CHLOROTRIMETHYLSILANE; ESTER DERIVATIVE; ORGANOBORONIC ACID; POTASSIUM DERIVATIVE; UNCLASSIFIED DRUG;

EID: 26844560825     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.tetlet.2005.09.101     Document Type: Article
Times cited : (135)

References (27)
  • 24
    • 26844493917 scopus 로고    scopus 로고
    • note
    • 2 requires m/z 280.9611.
  • 25
    • 26844467509 scopus 로고    scopus 로고
    • note
    • Representative procedure for hydrolysis of aryltrifluoroborates 2 with LiOH (Table 2, entry 10): to a mixture of potassium 4-fluorophenyl trifluoroborate (202 mg, 1.00 mmol) and lithium hydroxide (84 mg, 3.50 mmol) was added water (5 mL) and acetonitrile (10 mL). The resulting solution was stirred at room temperature for 20 h, acidified with saturated aqueous ammonium chloride (8 mL) and 1 M hydrochloric acid (2 mL), then extracted with ethyl acetate (3 × 10 mL). The combined organic extracts were dried over sodium sulfate, filtered and concentrated in vacuo to afford 4-fluorophenylboronic acid as a white solid (140 mg, 100%).
  • 26
    • 26844501929 scopus 로고    scopus 로고
    • note
    • 6) δ 26.2 (br s).


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.