Related Products of 139756-02-8, A common heterocyclic compound, 139756-02-8, name is 4-Amino-1-methyl-3-N-propyl-1H-pyrazole-5-carboxamide, molecular formula is C8H14N4O, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.
Synthesis of Bb; Step 7: 4-amino-i -methyl-3 -propyl- 1 H-pyrazole-5-carboxamide (1 eq) and 3 -Nitrobenzaldehyde (1.1 eq ) were suspended in methanol 5 ml and the mixtureheated at 65 C for 1.5 hours after conformation of forming of imine by TLC. Added CuC12 (3 eq) and the reaction mixture heated at7O C under 02 for 2.5 hours. After completion of the reaction, the methanol was removed under vacuum. Then workup with ethyl acetate and water. Separate the organic layer and Water layer re-extracted with 2×25 ml ethyl acetate. The combined organic layers are washed with brinesolution, concentrated under vacuum. The residue was purified by columnchromatography on silica the desired product Bb as a brown solid; yield 85%. ?H NMR(400 MHz DMSO): 8.90 (s 1H), .8.49(m iH), 8.35(m 1H), 7.84-7.80 (m 2H) 4.24(s3H), 2.8(t J = 7.3Hz 2H), 1 .80(m 2H), 0.95(t J = 7.3 Hz 3H). MASS: ESI [M + H] :314.12; Elemental anal. caled. for C15H15N503 C, 57.50; H, 4.83; N, 22.35; 0, 15.32;found C, 57.40; H, 4.85; N, 22.38; 0, 15.37
The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. We look forward to the emergence of more reaction modes in the future.
Reference:
Patent; COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH; SAWANT, Sanghapal Damodar; GINNEREDDY, Lakshma Reddy; MAHESUNI, Srinivas; SYED, Sajad Hussain; DAR, Mohd Ishaq; NARGOTRA, Amit; MAHAJAN, Priya; VISHWAKARMA, Ram Asrey; WO2015/114647; (2015); A1;,
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