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Chemical Structure| 68867-21-0 Chemical Structure| 68867-21-0

Structure of 68867-21-0

Chemical Structure| 68867-21-0

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Product Details of [ 68867-21-0 ]

CAS No. :68867-21-0
Formula : C8H5N3S
M.W : 175.21
SMILES Code : N#CC1=CC=C(N)C(SC#N)=C1
MDL No. :MFCD20694257

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Application In Synthesis of [ 68867-21-0 ]

* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.

  • Upstream synthesis route of [ 68867-21-0 ]

[ 68867-21-0 ] Synthesis Path-Upstream   1~1

  • 1
  • [ 68867-21-0 ]
  • [ 93-85-6 ]
YieldReaction ConditionsOperation in experiment
59% at 100℃; for 6 h; (2) 2-amino-benzo[d]thiazole-6-carboxylic and:; 13.0g (0.07mol) 4-amino-3-thiocyano-benzonitrile was weighed, dissolved in 120ml water, stirred uniformly, added with 60ml concentrated hydrochloric acid, reacted under refluxing and stirring at about 100°C for 6h. After the reaction, the reaction mixture was stood, filtered to obtain a precipitated solid, and dried out to obtain a light yellow solid product 8.5g (59.0percent). mp 280-282°C. 1H-NMR (ppm, d6-DMSO) δ: 7.45(d, J=8.40 Hz,1H), 7.67(dd,J1= 8.40Hz, J2=1.68Hz, 1H), 8.22 (d,J=1.68 Hz,1H),8.51(br-s, 2H,NH2).
59% at 100℃; for 6 h; (2)
2-amino-benzo[d]thiazole-6-carboxylic acid
13.0 g (0.07 mol) 4-amino-3-thiocyano-benzonitrile was weighed, dissolved in 120 ml water, stirred uniformly, added with 60 ml concentrated hydrochloric acid, reacted under refluxing and stirring at about 100° C. for 6 h.
After the reaction, the reaction mixture was stood, filtered to obtain a precipitated solid, and dried out to obtain a light yellow solid product 8.5 g (59.0percent).
mp 280-282° C. 1H-NMR (ppm, d6-DMSO) δ: 7.45 (d, J=8.40 Hz, 1H), 7.67 (dd, J1=8.40 Hz, J2=1.68 Hz, 1H), 8.22 (d, J=1.68 Hz, 1H), 8.51 (br-s, 2H, NH2).
59% With hydrogenchloride In water at 100℃; for 6 h; Weigh 13.0 g (0.07 mol) of 4-amino-3-thiocyano-benzonitrile,Dissolve in 120ml water, stir evenly, add 60ml concentrated hydrochloric acid,The reaction was stirred under reflux at about 100 ° C for 6 h. After the reaction was completed, it was allowed to stand.The solid was separated by filtration and dried to give 8.5 g (59.0percent).
References: [1] Patent: EP2354136, 2011, A1, . Location in patent: Page/Page column 16.
[2] Patent: US2011/319423, 2011, A1, . Location in patent: Page/Page column 10.
[3] Patent: CN109419802, 2019, A, . Location in patent: Paragraph 0155; 0159.
 

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