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| CAS No.: | 71042-72-3 |
|---|---|
| Name: | 2,3-Dihydro-7-methyl-1H-indene-4-carboxylic acid ethyl ester |
| Molecular Structure: | |
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| Formula: | C13H16O2 |
| Molecular Weight: | 204.269 |
| Synonyms: | 1H-Indene-4-carboxylic acid,2,3-dihydro-7-methyl-,ethyl ester;4-(Ethoxycarbonyl)-7-methylindan;7-methyl-2,3-dihydro-1H-indene-4-carboxylic acid ethyl ester;Ethyl 7-methyl-4-indancarboxylate; |
| Density: | 1.079g/cm3 |
| Boiling Point: | 330.9°Cat760mmHg |
| Flash Point: | 150°C |
| PSA: | 26.30000 |
| LogP: | 2.66040 |

1-pyrrolidinocyclopent-1-ene


(2E,4E)-ethyl hexa-2,4-dienoate


ethyl 7-methyl-2,3-dihydro-1H-indene-4-carboxylate

| Conditions | Yield |
|---|---|
| Stage #1: 1-pyrrolidinocyclopent-1-ene; (2E,4E)-ethyl hexa-2,4-dienoate In 5,5-dimethyl-1,3-cyclohexadiene Reflux; Stage #2: With sulfur at 250℃; for 2h; | 58% |
| With 2.) S 1.) xylene, reflux, 18h, 2.) 230 deg C, 30 min; Yield given. Multistep reaction; |

1-pyrrolidinocyclopent-1-ene


(2E,4E)-ethyl hexa-2,4-dienoate

A

ethyl 7-methyl-2,3-dihydro-1H-indene-4-carboxylate

B

7-Methyl-2,3,7,7a-tetrahydro-1H-indene-4-carboxylic acid ethyl ester

| Conditions | Yield |
|---|---|
| In xylene for 18h; Heating; Yield given. Yields of byproduct given. Title compound not separated from byproducts; |


ethyl 7-methyl-2,3-dihydro-1H-indene-4-carboxylate


4-(7-Methylindan)carboxylic acid

| Conditions | Yield |
|---|---|
| With potassium hydroxide In ethanol Heating; | 95% |

ethyl 7-methyl-2,3-dihydro-1H-indene-4-carboxylate

| Conditions | Yield |
|---|---|
| With bromine; nitric acid; silver nitrate; acetic acid In water at 20℃; | 80% |

ethyl 7-methyl-2,3-dihydro-1H-indene-4-carboxylate


4-(Chloromethanoyl)-7-methylindan

| Conditions | Yield |
|---|---|
| Multi-step reaction with 2 steps 1: 95 percent / aq. KOH / ethanol / Heating 2: 97 percent / thionyl chloride / 1 h / Heating View Scheme |

ethyl 7-methyl-2,3-dihydro-1H-indene-4-carboxylate


(7-methyl-indan-4-yl)-[2]naphthyl ketone

| Conditions | Yield |
|---|---|
| Multi-step reaction with 3 steps 1: 95 percent / aq. KOH / ethanol / Heating 2: 97 percent / thionyl chloride / 1 h / Heating 3: AlCl3 / CH2Cl2 / 1 h / Heating View Scheme | |
| Multi-step reaction with 3 steps 1: 95 percent / aq. KOH / ethanol / Heating 2: 97 percent / thionyl chloride / 1 h / Heating 3: 1.) Mg, cuprous iodide / 1.) THF, 45 deg C, 15 min, 2.) 45 deg C, 0.5 h View Scheme |

ethyl 7-methyl-2,3-dihydro-1H-indene-4-carboxylate


(7-methyl-indan-4-yl)-[1]naphthyl ketone

| Conditions | Yield |
|---|---|
| Multi-step reaction with 3 steps 1: 95 percent / aq. KOH / ethanol / Heating 2: 97 percent / thionyl chloride / 1 h / Heating 3: AlCl3 / CH2Cl2 / 1 h / Heating View Scheme | |
| Multi-step reaction with 3 steps 1: 95 percent / aq. KOH / ethanol / Heating 2: 97 percent / thionyl chloride / 1 h / Heating 3: 1.) Mg, cuprous iodide / 1.) THF, 45 deg C, 15 min, 2.) 45 deg C, 0.5h View Scheme |

ethyl 7-methyl-2,3-dihydro-1H-indene-4-carboxylate

| Conditions | Yield |
|---|---|
| Multi-step reaction with 2 steps 1: bromine; silver nitrate; acetic acid; nitric acid / water / 20 °C 2: lithium hydroxide monohydrate; water / tetrahydrofuran; methanol / 20 °C View Scheme |

ethyl 7-methyl-2,3-dihydro-1H-indene-4-carboxylate

| Conditions | Yield |
|---|---|
| Multi-step reaction with 3 steps 1: bromine; silver nitrate; acetic acid; nitric acid / water / 20 °C 2: lithium hydroxide monohydrate; water / tetrahydrofuran; methanol / 20 °C 3: oxalyl dichloride; N,N-dimethyl-formamide / dichloromethane / 20 °C / Inert atmosphere View Scheme |

ethyl 7-methyl-2,3-dihydro-1H-indene-4-carboxylate

| Conditions | Yield |
|---|---|
| Multi-step reaction with 4 steps 1: bromine; silver nitrate; acetic acid; nitric acid / water / 20 °C 2: lithium hydroxide monohydrate; water / tetrahydrofuran; methanol / 20 °C 3: oxalyl dichloride; N,N-dimethyl-formamide / dichloromethane / 20 °C / Inert atmosphere 4: aluminum (III) chloride / dichloromethane / 2 h / 0 - 20 °C View Scheme |