Reaktion #2709

Reaktionsgleichung

ethyl 4-[1-(2,2-dimethoxyethyl)-2-{1-(tol-4-yl)3,4-dihydro-4,4-dimethyl-naphthalen-7-yl}-(E)-ethen-1-yl]-benzoate

SnCl4

ethyl 4-[1(5-methyl-thien-2-yl)3,4-dihydro-4,4-dimethyl-anthracen-8-yl]-benzoate

ethyl 4-[1-(5-methyl-thien-2-yl)-3,4-dihydro-4,4-dimethyl-anthracen-8-yl]-benzoate

Compound 3

ethyl 4-[1-(5-methyl-thien-2-yl)-3,4-dihydro-4,4-dimethyl-anthracen-8-yl]-benzoate

1(2-methyl-pyrid-5-yl)3,4-dihydro-4,4-dimethyl-naphthaldehyde

Compound K

1(2-methyl-pyrid-5-yl)3,4-dihydro-4,4-dimethyl-naphthaldehyde

ethyl 4-(diethoxyphosphoryl-3,3-dimethoxypropyl)benzoate

Compound D

ethyl 4-(diethoxyphosphoryl-3,3-dimethoxypropyl)benzoate

→

Ethyl 4-[1-(6-methyl-pyrid-3-yl)-3,4-dihydro-4,4-dimethyl-anthracen-8-yl]-benzoate

Lösungsmittel

dichloromethane

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeThis compound is prepared in accordance with the procedure
2. 2
   Sonstigeto give the title compoud

Vorschrift

This compound is prepared in accordance with the procedure described for the preparation of ethyl 4-[1(5-methyl-thien-2-yl)3,4-dihydro-4,4-dimethyl-anthracen-8-yl]-benzoate (Compound 3), from 1(2-methyl-pyrid-5-yl)3,4-dihydro-4,4-dimethyl-naphthaldehyde (Compound K) by reaction with ethyl 4-(diethoxyphosphoryl-3,3-dimethoxypropyl)benzoate (Compound D) and proceeding through the intermediate ethyl 4-[1-(2,2-dimethoxyethyl)-2-{1-(tol-4-yl)3,4-dihydro-4,4-dimethyl-naphthalen-7-yl}-(E)-ethen-1-yl]-benzoate which is cyclized by treatment with SnCl4 in dichloromethane to give the title compoud.

Quelle