Selective ring N-protection of aminopyrazoles

Tetrahedron Letters

Volumn 44, Issue 24, 2003, Pages 4491-4493

  Seelen, Werner ^a   Schäfer, Martina ^a   Ernst, Alexander ^a,b  

^a BAYER PHARMA AG   (Germany)

^b Polyphor Ltd   (Switzerland)

Author keywords

[No Author keywords available]

Indexed keywords

AMIDE; CARBAMIC ACID DERIVATIVE; PYRAZOLE DERIVATIVE; TERT BUTOXYCARBAMATE; UNCLASSIFIED DRUG;

ACYLATION; ARTICLE; CHEMICAL STRUCTURE; SYNTHESIS;

EID: 0038742104     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0040-4039(03)00988-2     Document Type: Article

References (23)

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11. 3, 298 K) of 1: δ (ppm)=5.60 (br.s, 3H), 5.29 (s, 1H, H-C(4)), 4.9 Hz, 1H, H-C(6), 0.93-0.87 (m, 2H), 0.69-0.64 (m, 2H).
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13. 2), 3.10 (sext. J≈7.0, 1H), 2.71-2.30 (m, 3H), 2.02-1.91 (m, 1H), 1.18 (d, J=6.7, Me).
14. 2), 3.10 (sext. J≈7.0, 1H), 2.71-2.30 (m, 3H), 2.02-1.91 (m, 1H), 1.18 (d, J=6.7, Me).
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