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inquiryTIANFU-CHEM 8-Chloro-6,11-dihydro-11-(1-methyl-4-piperidinyl)-5H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-olAppearance:white powder Storage:room temperature Package:200KG Application:Industrial Grade Transportation:By sea , by air or express
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inquiryIndependent research and development of impurities, familiar with the market and impurity characteristics; We can ship out on the same day if the products are in stock; Focus on impurity development of new products in the market; Expert in customizi
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inquiry8-Chloro-6,11-dihydro-11-(1-methyl-4-piperidinyl)-5H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-olAppearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:intermediate Transportation:by air, by sea,
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8-chloro-5,6-dihydro-11H-Benzo[5,6]cyclohepta[1,2-b]pyridin-11-one
(1-methyl-4-piperidyl)magnesium chloride
8-chloro-6,11-dihydro-11-(1-methyl-4-piperidinyl)-5H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-ol
Conditions | Yield |
---|---|
In tetrahydrofuran Reflux; | 95% |
With (trimethylsilyl)methylmagnesium chloride; lithium chloride; zinc(II) chloride In tetrahydrofuran; diethyl ether at 0℃; for 2h; Inert atmosphere; | 90% |
In tetrahydrofuran at -95 - -15℃; for 2 - 3h; | 71.1% |
4-chloro-1-methylpiperidine
8-chloro-5,6-dihydro-11H-Benzo[5,6]cyclohepta[1,2-b]pyridin-11-one
8-chloro-6,11-dihydro-11-(1-methyl-4-piperidinyl)-5H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-ol
Conditions | Yield |
---|---|
Stage #1: 4-chloro-1-methylpiperidine With magnesium; ethylene dibromide In tetrahydrofuran at 20 - 48℃; Stage #2: 8-chloro-5,6-dihydro-11H-Benzo[5,6]cyclohepta[1,2-b]pyridin-11-one In tetrahydrofuran at -80 - -70℃; for 2 - 3h; Product distribution / selectivity; | 73.6% |
8-chloro-6,11-dihydro-11-(1-methyl-4-piperidinyl)-5H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-ol
N-methyldesloratadine
Conditions | Yield |
---|---|
With sulfuric acid at 20℃; for 4.5h; | 85% |
With sulfuric acid at 35 - 45℃; for 2 - 3h; | 80% |
Stage #1: 8-chloro-6,11-dihydro-11-(1-methyl-4-piperidinyl)-5H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-ol With sulfuric acid at 35 - 45℃; for 2 - 3h; Stage #2: In water pH=8 - 9; Product distribution / selectivity; |
8-chloro-6,11-dihydro-11-(1-methyl-4-piperidinyl)-5H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-ol
4-(8-chloro-5,6-dihydro-11H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-ylidene)-N-(2-methoxyphenyl)-1-piperidinecarbothioamide
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1: sulfuric acid / 4.5 h / 20 °C 2: triethylamine / toluene / 3 h / Reflux 3: potassium hydroxide / ethanol / 6 h / Reflux 4: ethanol / 1 h / 20 °C View Scheme |
8-chloro-6,11-dihydro-11-(1-methyl-4-piperidinyl)-5H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-ol
4-(8-chloro-5,6-dihydro-11H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-ylidene)-N-methyl-1-piperidinecarbothioamide
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1: sulfuric acid / 4.5 h / 20 °C 2: triethylamine / toluene / 3 h / Reflux 3: potassium hydroxide / ethanol / 6 h / Reflux 4: ethanol / 1 h / 20 °C View Scheme |
8-chloro-6,11-dihydro-11-(1-methyl-4-piperidinyl)-5H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-ol
4-(8-chloro-5,6-dihydro-11H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-ylidene)-N-cyclohexyl-1-piperidinecarbothioamide
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1: sulfuric acid / 4.5 h / 20 °C 2: triethylamine / toluene / 3 h / Reflux 3: potassium hydroxide / ethanol / 6 h / Reflux 4: ethanol / 1 h / 20 °C View Scheme |
8-chloro-6,11-dihydro-11-(1-methyl-4-piperidinyl)-5H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-ol
4-(8-chloro-5,6-dihydro-11H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-ylidene)-N-phenyl-1-piperidinecarbothioamide
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1: sulfuric acid / 4.5 h / 20 °C 2: triethylamine / toluene / 3 h / Reflux 3: potassium hydroxide / ethanol / 6 h / Reflux 4: ethanol / 1 h / 20 °C View Scheme |
8-chloro-6,11-dihydro-11-(1-methyl-4-piperidinyl)-5H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-ol
4-(8-chloro-5,6-dihydro-11H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-ylidene)-N-(2-methylphenyl)-1-piperidinecarbothioamide
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1: sulfuric acid / 4.5 h / 20 °C 2: triethylamine / toluene / 3 h / Reflux 3: potassium hydroxide / ethanol / 6 h / Reflux 4: ethanol / 1 h / 20 °C View Scheme |
8-chloro-6,11-dihydro-11-(1-methyl-4-piperidinyl)-5H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-ol
descarboethoxyloratadine
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: sulfuric acid / 4.5 h / 20 °C 2: triethylamine / toluene / 3 h / Reflux 3: potassium hydroxide / ethanol / 6 h / Reflux View Scheme |
8-chloro-6,11-dihydro-11-(1-methyl-4-piperidinyl)-5H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-ol
loratadine
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: sulfuric acid / 4.5 h / 20 °C 2: triethylamine / toluene / 3 h / Reflux View Scheme |
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