HuagongsheHuagongshe Chemistry Print Report · For research reference only
Salicylaldehyde → 3,4-Dihydro-3'-methyl-4-(3-methyl-2-benzothiazolinylidenemethyl)spiro[2H-1-benzopyran-2,2'-benzothiazoline]
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Salicylaldehyde | HCID 6998 | — |
| Reactant | Piperidine | HCID 8082 | — |
| Reactant | Benzothiazolium, 2,3-dimethyl-, 4-methylbenzenesulfonate (1:1) | HCID 102307 | — |
| Solvent | Ethanol | HCID 702 | — |
| Product | 3,4-Dihydro-3'-methyl-4-(3-methyl-2-benzothiazolinylidenemethyl)spiro[2H-1-benzopyran-2,2'-benzothiazoline] | HCID 54385291 | — |
Reaction Steps
40.2 g of 2,3-dimethylbenzothiazolium tosylate and 7.32 g of salicylic aldehyde were mixed in 1200 ml of ethanol; to this mixture were added 12 ml of piperidine with stirring. Stirring was continued for 1 hour at room temperature. A precipitate was formed which was filtered out and washed with ethanol.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04306017 |
| Source dataset | uspto-grants-1981_12 |
| ORD ID | ord-d96a7052256b4491968160022c1a4b1a |
| Source note | uspto-grants-1981_12 |