메뉴 건너뛰기




Volumn 12, Issue 19, 2010, Pages 4296-4299

Catalytic asymmetric synthesis of quaternary α-hydroxy trifluoromethyl phosphonate via chiral aluminum(III) catalyzed hydrophosphonylation of trifluoromethyl ketones

Author keywords

[No Author keywords available]

Indexed keywords

ALPHA HYDROXY TRIFLUOROMETHYL PHOSPHONATE; ALPHA-HYDROXY TRIFLUOROMETHYL PHOSPHONATE; ALUMINUM; FLUORINE DERIVATIVE; KETONE; LIGAND; ORGANOPHOSPHORUS COMPOUND;

EID: 77957174098     PISSN: 15237060     EISSN: 15237052     Source Type: Journal    
DOI: 10.1021/ol101737b     Document Type: Article
Times cited : (49)

References (58)
  • 13
    • 0028332523 scopus 로고
    • For catalytic enantioselective synthesis of α-trifluoromethyl tertiary alcohols, see for the trifluoromethylation reaction
    • For catalytic enantioselective synthesis of α-trifluoromethyl tertiary alcohols, see for the trifluoromethylation reaction: Iseki, K.; Nagai, T.; Kobayashi, Y. Tetrahedron Lett. 1994, 35, 3137
    • (1994) Tetrahedron Lett. , vol.35 , pp. 3137
    • Iseki, K.1    Nagai, T.2    Kobayashi, Y.3
  • 39
    • 0027291951 scopus 로고
    • For selected examples for the chiral Lewis acid catalyzed hydrophosphonylation of aldehyde, see
    • For selected examples for the chiral Lewis acid catalyzed hydrophosphonylation of aldehyde, see: Yokomatsu, T.; Yamagishi, T.; Shibuya, S. Tetrahedron: Asymmetry 1993, 4, 1779
    • (1993) Tetrahedron: Asymmetry , vol.4 , pp. 1779
    • Yokomatsu, T.1    Yamagishi, T.2    Shibuya, S.3
  • 48
    • 70549103416 scopus 로고    scopus 로고
    • 4 has been successfully applied in the hydrophosphonylation of ketones for the synthesis of quaternary α-hydroxy phosphonates, see
    • 4 has been successfully applied in the hydrophosphonylation of ketones for the synthesis of quaternary α-hydroxy phosphonates, see: Zhou, X.; Liu, Y. L.; Chang, L.; Zhao, J. N.; Shang, D. J.; Liu, X. H.; Lin, L. L.; Feng, X. M. Adv. Synth. Catal. 2009, 351, 2567
    • (2009) Adv. Synth. Catal. , vol.351 , pp. 2567
    • Zhou, X.1    Liu, Y.L.2    Chang, L.3    Zhao, J.N.4    Shang, D.J.5    Liu, X.H.6    Lin, L.L.7    Feng, X.M.8
  • 49
    • 77957125887 scopus 로고    scopus 로고
    • note
    • 4 catalyzed the hydrophosphonylation of trifluoromethyl ketone smoothly, giving the corresponding quaternary α-hydroxy trifluoromethyl phosphonates with 70% yield. However, the phospha-Brook rearrangement also occurred, and 23% yield of α- trifluoromethyl phosphate was obtained.
  • 50
    • 28744457017 scopus 로고    scopus 로고
    • The intermediate of the phospha-Brook rearrangement may potentially react with other electrophiles. See
    • The intermediate of the phospha-Brook rearrangement may potentially react with other electrophiles. See: Demir, A. S.; Reis, .; I?g?dir, A. C.; Esiringe, I?.; Eymur, S. J. Org. Chem. 2005, 70, 10584
    • (2005) J. Org. Chem. , vol.70 , pp. 10584
    • Demir, A.S.1    Reis, .2    Igdir, A.C.3    Esiringe, I.4    Eymur, S.5
  • 53
    • 77957164683 scopus 로고    scopus 로고
    • 1,1,1-Trifluoro-3-phenylpropan-2-one was also tested in the catalytic hydrophosphonylation, though the reaction performed smoothly, only racemic product was obtained
    • 1,1,1-Trifluoro-3-phenylpropan-2-one was also tested in the catalytic hydrophosphonylation, though the reaction performed smoothly, only racemic product was obtained.
  • 56
    • 77957124415 scopus 로고    scopus 로고
    • See also ref 11i
    • See also ref 11i.
  • 57
    • 77957165487 scopus 로고    scopus 로고
    • note
    • 2,2-Difluoroacetophenone underwent the catalytic asymmetric hydrophosphonylation slowly, and the corresponding product was obtained with 63% yield and 70% ee. It is suspected that the strong electron-withdrawing property and large steric effect of the trifluoromethyl group was responsible for the high reactivity and enantioselectivity of the catalytic asymmetric hydrophosphonylation of trifluoromethyl ketones.
  • 58
    • 77957135783 scopus 로고    scopus 로고
    • note
    • The relationship between the enantiomeric excess of the chiral ligand L5 and the product 8a was investigated. Linear effect was observed, which implied that the reaction was performed in the presence of monomeric aluminum species.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.