The invention relates to a method for producing cyclododecanone (CDON). During the production, contaminated cyclododecane (CDAN) is produced. This can be separated from CDON by distillation (CDAN-containing fraction). The separation of CDAN and impurities such as 13-oxabicyclo [7.3.1]tridecane occurs by crystallizing out CDAN from the CDAN-containing fraction.

The invention relates to a method for producing cyclododecanone (CDON). During the production, contaminated cyclododecane (CDAN) is produced. This can be separated from CDON by distillation (CDAN-containing fraction). The separation of CDAN and impurities such as 13-oxabicyclo [7.3.1]tridecane occurs by crystallizing out CDAN from the CDAN-containing fraction.

The present invention relates to a process for preparing C.sub.4-C.sub.15 lactams, in which a C.sub.1-C.sub.10-alkyl nitrite is reacted with a C.sub.4-C.sub.15-cycloalkane and is illuminated with a light-emitting diode during the reaction. This forms a C.sub.4-C.sub.15-cyclohexanone oxime which is then converted further to a C.sub.4-C.sub.15 lactam; the C.sub.1-C.sub.10 alcohol formed is recycled into the preparation of the C.sub.1-C.sub.10-alkyl nitrite.

The present invention relates to a process for preparing C.sub.4-C.sub.15 lactams, in which a C.sub.1-C.sub.10-alkyl nitrite is reacted with a C.sub.4-C.sub.15-cycloalkane and is illuminated with a light-emitting diode during the reaction. This forms a C.sub.4-C.sub.15-cyclohexanone oxime which is then converted further to a C.sub.4-C.sub.15 lactam; the C.sub.1-C.sub.10 alcohol formed is recycled into the preparation of the C.sub.1-C.sub.10-alkyl nitrite.

The invention relates to a method for producing cyclododecanone (CDON). During the production, contaminated cyclododecane (CDAN) is produced. This can be separated from CDON by distillation (CDAN-containing fraction). The separation of CDAN and impurities such as 13-oxabicyclo [7.3.1]tridacane occurs by crystallizing out CDAN from the CDAN-containing fraction.

The invention relates to a method for producing cyclododecanone (CDON). During the production, contaminated cyclododecane (CDAN) is produced. This can be separated from CDON by distillation (CDAN-containing fraction). The separation of CDAN and impurities such as 13-oxabicyclo [7.3.1]tridacane occurs by crystallizing out CDAN from the CDAN-containing fraction.

The present invention relates to a process for preparing C.sub.4-C.sub.15 lactams, in which a C.sub.1-C.sub.10-alkyl nitrite is reacted with a C.sub.4-C.sub.15-cycloalkane and is illuminated with a light-emitting diode during the reaction. This forms a C.sub.4-C.sub.15-cyclohexanone oxime which is then converted further to a C.sub.4-C.sub.15 lactam; the C.sub.1-C.sub.10 alcohol formed is recycled into the preparation of the C.sub.1-C.sub.10-alkyl nitrite.

The present invention relates to a process for preparing C.sub.4-C.sub.15 lactams, in which a C.sub.1-C.sub.10-alkyl nitrite is reacted with a C.sub.4-C.sub.15-cycloalkane and is illuminated with a light-emitting diode during the reaction. This forms a C.sub.4-C.sub.15-cyclohexanone oxime which is then converted further to a C.sub.4-C.sub.15 lactam; the C.sub.1-C.sub.10 alcohol formed is recycled into the preparation of the C.sub.1-C.sub.10-alkyl nitrite.

The present invention relates to certain salts of a 11-(2-pyrrolidin-1-yl-ethoxy)-14,19-dioxa-5,7,26-triaza-tetracyclo[19.3.1.1(2,6).1(8,12)]heptacosa-1(25),2(26),3,5,8,10,12(27),16,21,23-decaene (Compound I) which have been found to have improved properties. In particular the present invention relates to the citrate salt of this compound. The invention also relates to pharmaceutical compositions containing the citrate salt and methods of use of the citrate salt in the treatment of certain medical conditions. ##STR00001##

The present invention relates to certain salts of a 11-(2-pyrrolidin-1-yl-ethoxy)-14,19-dioxa-5,7,26-triaza-tetracyclo[19.3.1.1(2,6).1(8,12)]heptacosa-1(25),2(26),3,5,8,10,12(27),16,21,23-decaene (Compound I) which have been found to have improved properties. In particular the present invention relates to the citrate salt of this compound. The invention also relates to pharmaceutical compositions containing the citrate salt and methods of use of the citrate salt in the treatment of certain medical conditions. ##STR00001##