[EN] SYNTHESIS OF (S)-N-[2-(1,6,7,8-TETRAHYDRO-2H-INDENO-[5,4-B]FURAN-8-YL)ETHYL]PROPIONAMIDE<br/>[FR] SYNTHÈSE DE (S)-N-[2-(1,6,7,8-TÉTRAHYDRO-2H-INDÉNO-[5,4-B]FURAN-8-YL)ÉTHYL]PROPIONAMIDE
申请人:LEK PHARMACEUTICALS
公开号:WO2010092107A1
公开(公告)日:2010-08-19
The present invention relates in general to the field of organic chemistry and in particular to the preparation of (S)-N-[2-(1,6,7,8-tetrahydro-2H-indeno-[5,4-b]furan-8-yl)ethyl]propionamide, i.e. ramelteon, and analogues thereof.
[EN] SYNTHESIS OF 6,7-DIHYDRO-1H-INDENO[5,4-B]FURAN-8(2H)-ONE AS INTERMEDIATE IN THE PREPARATION OF RAMELTEON<br/>[FR] SYNTHÈSE DE LA 6,7-DIHYDRO-1H-INDÉNO[5,4-B]FURAN-8(2H)-ONE EN TANT QU'INTERMÉDIAIRE DANS LA PRÉPARATION DU RAMELTÉON
申请人:LEK PHARMACEUTICALS
公开号:WO2010007022A1
公开(公告)日:2010-01-21
The present invention describes the preparation of 6, 7 -dihydro-1H-indeno[5, 4 -b] furan-8 (2H) -one of formula V, a key intermediate in preparation of ramelteon. The present invention also describes further preceding intermediate compounds useful for the synthesis of 6, 7-dihydro-1H-indeno[5, 4-b] furan-8 (2H) -one.
SYNTHESIS OF (S)-N-[2-(1,6,7,8-TETRAHYDRO-2H-INDENO-[5,4-B]FURAN-8-YL)ETHYL]PROPIONAMIDE
申请人:Cluzeau Jerome
公开号:US20120071673A1
公开(公告)日:2012-03-22
The present invention relates in general to the field of organic chemistry and in particular to the preparation of (S)—N-[2-(1,6,7,8-tetrahydro-2H-indeno-[5,4-b]furan-8-yl)ethyl]propionamide, i.e. ramelteon, and analogues thereof.
The present invention relates to the use of acetophenone or benzophenone derivatives of the formula I
where R is unsubstituted or substituted
C
1
to C
3
alkyl,
C
6
to C
10
aryl or aralkyl having from 6 to 10 carbon atoms in the aryl moiety and from 1 to 6 carbon atoms in the alkyl moiety as copolymerizable photoinitiators. The invention further relates to copolymers containing acetophenone or benzophenone derivatives of the formula I in copolymerized form, to processes for preparing said copolymers, and to the use of said copolymers in UV crosslinkable compositions.
SYNTHESIS OF 6,7-DIHYDRO-1H-INDENO[5, 4-B] FURAN-8(2H)-ONE AS INTERMEDIATE IN THE PREPARATION OF REMELTEON
申请人:Cluzeau Jerome
公开号:US20110184058A1
公开(公告)日:2011-07-28
The present invention describes the preparation of 6,7-dihydro-1H-indeno[5,4-b]furan-8(2H)-one, a key intermediate in preparation of ramelteon. The present invention also describes further preceding intermediate compounds useful for the synthesis of 6,7-dihydro-1H-indeno[5,4-b]furan-8(2H)-one.