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Cas Database

1098782-64-9

1098782-64-9

Identification

  • Product Name:dimethyl 2-(methoxycarbonylmethyl)-4-oxo-3-o-tolyl-3,4-dihydro-2H-naphtho[2,3-e][1,3]oxazine-2-carboxylate

  • CAS Number: 1098782-64-9

  • EINECS:

  • Molecular Weight:419.434

  • Molecular Formula: C24H21NO6

  • HS Code:

  • Mol File:1098782-64-9.mol

Synonyms:

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Relevant articles and documentsAll total 1 Articles be found

A three-component reaction between trialkyl phosphites or triphenylphosphine, dimethyl acetylenedicarboxylate and N-aryl-3- hydroxynaphthalene-2-carboxamide

Anary-Abbasinejad, Mohammad,Hassanabadi, Alireza,Mazraeh-Seffid, Manouchehr

, p. 708 - 712 (2008/09/20)

A three-component reaction between dimethyl acetylenedicarboxylate (DMAD) and trialkyl phosphites in the presence of N-aryl-3-hydroxynaphthalene-2- carboxamide leads to dialkyl 2-(dimethoxyphosphoryl)-3-[2-hydroxy-3- (arylcarbamyl)naphthalen-1-yl] succinate in excellent yields. A similar reaction with triphenylphosphine, instead of phosphites, produces dimethyl 2-[2-hydroxy-3-(arylcarbamoyl)naphthalen-1-yl]maleates. In the absence of triphenylphosphine or phosphite, DMAD adds to N-aryl-3-hydroxynaphthalene-2- carboxamide to produce alkyl 2-(alkoxycarbonylmethyl)-4-oxo-3-aryl-3,4-dihydro- 2H-naphtho[2,3-e][1,3]oxazine-2-carboxylates in good yields.

Process route upstream and downstream products

Process route

naphthol ASD
135-61-5

naphthol ASD

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

dimethyl 2-(methoxycarbonylmethyl)-4-oxo-3-o-tolyl-3,4-dihydro-2H-naphtho[2,3-e][1,3]oxazine-2-carboxylate
1098782-64-9

dimethyl 2-(methoxycarbonylmethyl)-4-oxo-3-o-tolyl-3,4-dihydro-2H-naphtho[2,3-e][1,3]oxazine-2-carboxylate

Conditions
Conditions Yield
In acetone; at 20 ℃; for 24h;
93%
naphthol ASD
135-61-5

naphthol ASD

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

dimethyl 2-(methoxycarbonylmethyl)-4-oxo-3-o-tolyl-3,4-dihydro-2H-naphtho[2,3-e][1,3]oxazine-2-carboxylate
1098782-64-9

dimethyl 2-(methoxycarbonylmethyl)-4-oxo-3-o-tolyl-3,4-dihydro-2H-naphtho[2,3-e][1,3]oxazine-2-carboxylate

Conditions
Conditions Yield
In acetone; at 20 ℃; for 24h;
93%

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