Diethyl amino

The catalyst is removed by filtration, using an absolute alcohol wash, and the clear filtrate is concentrated under reduced pressure at a temperature below 50" (water bath). As diethyl amino-malonate is not so stable as its salts, the crude ])roduct is con-... 

Benzilic and other esters of tropine and 4-tropine a-phenylvalerie, diphenylacetic, fluorene-9-earboxylie, tropic, and other esters of /3-diethylaminoethanol tropic and other "esters of y-diethyl-amino- /3-dimethylpropanol (Fromherz esters of morpholinoalkyl alcohols. ... 

The enamino ketone (49) was reported to give no identifiable products on reaction with N,N-dimethyl carbamoyl chloride 63). However, reaction of (49) with N,N-diethyl carbamoyl chloride in refluxing chlorobenzene gave the N-(3-diethyl-amino-5,5-dimethylcyclohex-2-en-1 -ylidene)pyrrolidinium salt, isolated as the perchlorate. The latter must have been formed as outlined in Scheme I, involving initial O carbamoylation followed by an addition-elimination reaction to give 138 cation which can react with diethylamino anion by a further addition-elimination displacement to give the product 46). 

Diethyl Amino Ethyl Amine Ethyl Oxalate 2-Chlorobenzyl Chloride... 

After consecutive elutions with pure benzene, and benzene containing increasing proportions of chloroform, 0.748 g of 1 -diethyl amino ethyl-reserpine is isolated in the form of a resin. The crystalline acid bitartrate prepared in ethyl acetate melts at 145°-150°C, with decomposition. 

Chloro-4-amino benzoic acid (3-Diethyl amino ethanol... 

Chemical Name Tetrahydro-o-(1-naphthalenylmethyl)-2-furanpropanoic acid 2-(diethyl-amino)ethyl ester acid oxalate... 

The reaction of diethylamine or alcohol with 2,3-allenamide 551 affords /3-diethyl-amino-a,/3-unsaturated enamide 555, indicating the migration of the C=C bond under basic conditions. The corresponding reaction of 551 with benzyl thiol proceeded to afford /j-thiobenzy 1-/1,y-unsatu rated enamide 556 the /i,y-C=C bond can migrate to the a,/3-position on the treatment with DBU in THF to afford 557 [257]. In reactions of 4,4-dichloro-2,3-butenamide 558 with amines, thiolates and alcohols, ce,/j-unsaturated enamides 560-564 are always formed on treatment with a base [258, 259]. 

Diethyl amino(4-nitrophenyl)methylenemalonates (290) were prepared in 50-60% yields in similar reactions, starting from diethyl (4-nitrophenyl) (4-bromophenylsulfonyloxy)methylenemalonate (289) and morpholine or piperidine. 

Under the previous conditions, diethyl (amino)phenylmethylenemalo-nate (313) was also obtained in 35% yield in the reaction of diethyl bromo-malonate and benzonitrile (85TL2603). 

Pyrazolo[l,5-a]pyrimidine-6-carboxylates (1402) were prepared in 70% yields in the reaction of 3-aminopyrazoles and diethyl amino(trichloro-methyl)methylenemalonate in boiling ethanol in the presence of sodium ethoxide for 6 hr (78JPR533). 

Diethyl amino(trifluoromethyl)methylenemalonate was reacted with tri-methylsilyl chloride in boiling benzene in the presence of triethylamine for 3 hr to give the AMrimethylsilyl derivative (1532) in 90% yield (81ZOR439). 

DEAE is the abbreviation for DiEthyl Amino Ethyl, the binding group of a substitution on cellulose. SDS/PAGE is a technique for naming the material used for electophoresis in which SDS represents sodium dodecyl sulfate solution that is used with PolyAcrylimide Gel Electrophoresis (PAGE). 

Fig. 3.162. Structure of LRSC 9-[(4-chlorosulphonyl)-2-sulphonylphenyl]-3,6-bis(diethyl)amino-xanthylium hydroxide inner salt. Reprinted with permission from S. M. Smith et al. [200].

Fig. 5 shows the SEC/UV and SEC/IR traces of PMMA samples (78) which were photopolymerized with different concentrations of photogensitizer (0.05 x 10 M, 0.08 x 10 M, 0.25 x 10 M and 0.5 X 10 M). The photosensitizer used was 4,4 bis-(diethyl amino) benzophenone (DEABP). From the UV traces it is seen that the photosensitizers are chemically bound to the polymer chains. The results also seem to indicate that a greater number of sensitizer fragments reside in the lower molecular weight regions. A considerable amount of free sensitizer can be detected by the UV detector (retention volume 210 ml) when t e Initial concentration of the sensitizer is above 0.08 x 10 M. The other... 

HjC4-N(CjH5)2 (H3C)2CH -(CHJj-O-NO / konz. HCl/H5C2-OH/ HjC-COOH 0 12 2-[4-(4-Diethyl-amino-phenyl-azo)-phenyl -3JH-(,pyrido-[ 2,3-d]imida-zoiy 2 5)2 264- 266 1... 

CII2-CH=CH-COOCH3 ( E)-4- Benzyl-( 4-diethyl-amino-2-buten-yf]-2-butensaure-methy tester 50... 

Recently Martin and Narayanan [104] reported that the a-aminonitrile 2(JV,iV-diethylamino)-2-phenylacetonitrile undergoes a Michael addition with acrylonitrile in the absence of solvent but in the presence of benzyltrimethyl-ammonium hydroxide. The residue, obtained by ether extraction, is rapidly dehydrocyanated during distillation to give the enamine 4-(jV,jV-diethyl-amino)-4-phenyl-3-butenenitrile in 58 % yield (Eq. 44). Whether this reaction... 

Dioxo-8a-methyl-l, 2,3,4,6,7,8,8a-octahydronaphthalene has been obtained through the reaction of 2-methyl-l,3-cyclohexane-dione with acetonedicarboxylic acid and formaldehyde,3 4-diethyl-amino-2-butanone methiodide,3 pyridine and 4-diethylamino-2-butanone,4 triethylamine and 4-diethylamino-2-butanone,5 and by cyclization of 2-methyl-2-(3-oxobutyl)-l,3-cyclohexanedione using either aluminum fer/-butoxide or piperidine phosphate as catalyst.6 7... 

Tris(diethyl)amino]phosphonium 2,2,3,3,4,4-Hexafluorocyclobutane Ylide... 

Tris(diethyl)amino]phosphoniuni 2,2,3,3,4,4-hexafluorocyclobutane ylide (2) is a very hydroscopic solid, which is stable for long periods of time when stored under anhydrous conditions.13 It is unreactive towards most functional groups such as C = C bonds, ketones, aldehydes, and esters but reacts smoothly under neutral conditions with alcohols or carboxylic acids with replacement of the hydroxy group by a fluorine atom.44,45 Other tris(dialkylammo-nium)phosphonium perfluorocyclobutanes have been synthesized however, they are less reactive fluorinating reagents.44,45... 

Triethylammonium 2,2,3,3,4,4-hexafluorocyclobutane ylide (5) is a mild fluorinating agent that has identical properties to [tris(diethyl)amino]phosphonium 2,2.3,3,4,4-hexafluorocyclobutane ylide (2) and gives comparable yields for fluorination of alcohols and carboxylic acids.44... 

The more nitrogen the heteroaromatic nucleus contains, the more easily reducible it is in such cases the nucleus may be reduced in preference to a carbon-halogen bond. Thus whereas the first reduction of 2-(diethyl-amino)-4,6-dichloro-s-triazine in aqueous solution is a reductive removal of a chlorine, the second reduction is of the nucleus.437,438... 

A,A/-Diethylpentafluorocyclobut-l-enamine is hydrolyzed in acidic media to give 3-(diethyl-amino)trifluorocyclobut-2-enone (37).143... 

Dichlorodiphenylsilane, 74 1,2-Diethoxy-1,2-bis(trimethylsilyloxy)-ethylene, 108 Diethoxymethylsilane, 76 Dimethoxy[ 1-trimethylsilyl-l, 2-buta-dienyljborane, 218 Dimethylphenylsilane, 123 Dimethylphenylsilane-Tris(diethyl-amino)sulfonium difluorotrimethyl-silicate, 123... 

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