In a preferred embodiment, there is provided a process for separating an amine compound or a conjugate acid thereof and a carbamate compound or a conjugate acid thereof from a mixture having the amine compound, the carbamate compound, carbon dioxide and at least one anionic contaminant salt using an anionic exchange column, the process including passing the mixture through the column to obtain a first effluent and passing through the column an extraction fluid to obtain a second effluent, where the extraction fluid most preferably includes carbonic acid.

In a preferred embodiment, there is provided a process for separating an amine compound or a conjugate acid thereof and a carbamate compound or a conjugate acid thereof from a mixture having the amine compound, the carbamate compound, carbon dioxide and at least one anionic contaminant salt using an anionic exchange column, the process including passing the mixture through the column to obtain a first effluent and passing through the column an extraction fluid to obtain a second effluent, where the extraction fluid most preferably includes carbonic acid.

A method for removing methoxyethanol from a mixture comprising methoxyethanol and morpholine makes use of the selective adsorption of methoxyethanol onto a mixed oxide comprising a spinel phase. The mixed oxide comprises 20 to 30% by weight MgO and 80 to 70% by weight Al.sub.2O.sub.3. The spinel phase has the formula MgAl.sub.2O.sub.4. The mixture is a pre-purified reaction output of the reaction of diethylene glycol with ammonia in the presence of an amination catalyst.

A method for removing methoxyethanol from a mixture comprising methoxyethanol and morpholine makes use of the selective adsorption of methoxyethanol onto a mixed oxide comprising a spinel phase. The mixed oxide comprises 20 to 30% by weight MgO and 80 to 70% by weight Al.sub.2O.sub.3. The spinel phase has the formula MgAl.sub.2O.sub.4. The mixture is a pre-purified reaction output of the reaction of diethylene glycol with ammonia in the presence of an amination catalyst.

A process for the depletion of 2-methoxyethanol (MOE) from a mixture comprising predominantly morpholine (MO) (crude morpholine), wherein crude morpholine is distilled in a distillation column in the presence of an alkali metal compound of the general formula M.sup.+[RO.sup.] (M.sup.+ is alkali metal cation and R is hydrogen (H), methyl, ethyl, propyl, isopropyl, n-butyl, isobutyl, sec-butyl or tert-butyl), where MO and a compound of the general formula ROH are distilled off and an alkali metal methoxyethoxide of the general formula M.sup.+[MeOEtO.sup.] is obtained in the bottom of the column.

A process for the continuous distillative separation of mixtures comprising morpholine (MO), monoaminodiglycol (ADG), ammonia, water and methoxyethanol (MOE), obtained by reacting diethylene glycol (DEG) with ammonia, wherein ammonia, water, ADG and DEG are removed by distillation and the resulting stream comprising MO and MOE is supplied to a distillation column K40 in which at a top pressure of from 20 to 2000 mbar MO, MOE and organic products having a boiling point 128 C. (1.013 bar) are removed via the bottom and organic products having a boiling point 128 C. are removed overhead, and also MO is removed via a side draw, where K40 is equipped with an evaporator for heating the bottoms, into which is fed heating vapor having a pressure of from 1 to 10 bar.

A process for the continuous distillative separation of mixtures comprising morpholine (MO), monoaminodiglycol (ADG), ammonia, water and methoxyethanol (MOE), obtained by reacting diethylene glycol (DEG) with ammonia, wherein ammonia, water, ADG and DEG are removed by distillation and the resulting stream comprising MO and MOE is supplied to a distillation column K40 in which at a top pressure of from 20 to 2000 mbar MO, MOE and organic products having a boiling point 128 C. (1.013 bar) are removed via the bottom and organic products having a boiling point 128 C. are removed overhead, and also MO is removed via a side draw, where K40 is equipped with an evaporator for heating the bottoms, into which is fed heating vapor having a pressure of from 1 to 10 bar.

A method of reducing an aromatic ring under relatively mild condition using sub-nano particles of a transition metal supported on super paramagnetic iron oxide nanoparticles (SPIONs). The catalyst is efficient for catalyzing the reduction of both carbocyclic and heterocyclic compound. In compound comprising both carbocyclic and heterocyclic aromatic rings, the catalyst displays high regioselectivity for the heterocyclic ring.

A method of reducing an aromatic ring under relatively mild condition using sub-nano particles of a transition metal supported on super paramagnetic iron oxide nanoparticles (SPIONs). The catalyst is efficient for catalyzing the reduction of both carbocyclic and heterocyclic compound. In compound comprising both carbocyclic and heterocyclic aromatic rings, the catalyst displays high regioselectivity for the heterocyclic ring.

The present invention relates to a method for the manufacture of 2-(3-(alkyl or alkenyl)morpholino)-ethan-1-ols by reduction of 8a-(alkyl or alkenyl)hexahydrooxazolo[2,3-c][1,4]oxazines encompassing a process for producing 2-(3-(4-propylheptyl)morpholino)ethan-1-ol with the INN name delmopinol. The invention also relates to 1-chloro-4-propylhept-3-ene, 1-iodo-4-propylhept-3-ene, 8a-(4-propylheptyl)hexahydrooxazolo[2,3-c][1,4]oxazine, 8a-(4-propylhept-3-en-1-yl)hexahydrooxazolo[2,3-c][1,4]oxazine and 2-(3-(4-propylhept-3-en-1-yl)morpholino)ethan-1-ol which are intermediates in the delmopinol process.