Bis ethoxy

A similar irradiation of imide 9 in acetonitrile gives a mixture of ethyl 4,5-bis(ethoxy-carbonylamino)-l//-l,2-diazepine-l-carboxylate (10) and the isomeric ethyl 5,6-bis(ethoxycar-bonylamino)-l/f-l,2-diazepine-l-carboxylate (11) in the ratio 6 1. In contrast, when the irradiation is carried out in dichloromethane, the ratio is reversed to 1 2.5.81... 

Craig and co-workers247 reported the synthesis of l-aza-2,4,10-trithiaada-mantane (227) as a by-product in the reaction of ammonium dithiocarbamate with an aqueous solution of chloroacetaldehyde. The same compound is reported to be obtained by the reaction of mercaptoacetaldehyde with ammonia248 and then by the reaction of tri(2,2-bis(ethoxy)ethyl]amine (228) with hydrogen sulfide in the presence of hydrobromic acid.249 The... 

A recent example is provided by the kinetics of closure of l,l-bis(ethoxy-carbonyl) cycloalkanes [7] from the anions derived from diethyl o-bromoal-kylmalonates (49a), which have been investigated by Casadei et al. (1984) in... 

Scheme 1.28. Addition of Y,y-bis(ethoxy)allylzirconocene derivatives to aldehydes.

Dimethyl-1,2-benzenedicarboxylate, see Dimethyl phthaiate Dimethylbenzene-odicarboxylate, see Dimethyl phthaiate 0,0-Dimethyl-5 [l,2-bis(ethoxy-carbonyl)ethyl]dithio-phosphate, see Malathion... 

In order to overcome all these synthetic drawbacks, an alternative methodology using tetrahydrofuran solvates [M(CO)5(THF)] and deprotonated tris-amino or alkoxo prop-1-ynes was developed by H. Fischer and co-workers (Scheme 3), which allowed the preparation of the bis(amino)- and bis(ethoxy)-allenylidene complexes [M =C=C=C(NMe2)2 (CO)5] (M = Cr, W) [27] and [M(=C=C=C (OEt)2 (CO)5] (M = Cr, W) [28], respectively. Although the latter could not be isolated in pure form, they were conveniently employed as starting materials for further transformations (see below). 

Acetamido-2,2-bis-(ethoxy- carbonyl)ethyl]-7-chlorO 5% H2S04 99 [6]... 

H3C-P(OC2Hs)2 ct—cih2—ch2—et 160 1,4- Bis-[(ethoxy-methyl-phos-phory )-methyiy benzol 88 (Schmp. 139°) 508... 

HsQ,-P(OC2H5)i U RiickfluB 1,2-Bis- [ethoxy-phenyl-phos-phoryl]-hexafluor-cyclopenten 34 174-176 0,4 (0,05) 525... 

S II hsC2-p-sh 1 OC2H5 Cl2CH-CO-NH2 Benzol, (H,C-)3N, 80°, 90 Min. Bis- [ethoxy-elhyl-thiophos-phonylthio]-acetamid - Schmp. 94° 850... 

Auf die gleiche Weise erhalt man z.B. Bis-[dipropargyloxy-thiophosphoryl]-disulfan3sl (58%) sowie Bis-[ethoxy-methoxy-thiophosphoryl]-disulfan35i (70%)-Ein technisch einfaches Verfahren stellt die Oxidation mit Natriumhypochlorit (Chorlau-ge) (in Wasser, pH 6-10,10-15°) dar z. B. Bis- [diisopropyloxy-thiophosphoryl]-disulfan (-100% Schmp. 85-890)359. 

Bis-[ethoxy-hydroxy-phosphoryl]- XII/2, 963 Bis-[3-(hydroxy-methyl-phosphonyl)-propyl]-pbe-nyl- E2, 143... 

Bis-[diphenoxy-thiopbosphoryl]- E2, 710, 723, 726 Bis- diphenyl-thiophosphinyl]- E2, 266, 274 Bis-[dipropargyloxy-thiophospboryl]- E2, 731 Bis-[ethoxy-metboxy-thiophospboryl]- E2, 731 (4-Cblor-phenyl)-(dietboxy-thiophosphoryl)- E2, 724... 

Bis-[dipropyloxy-thiophosphoryl]- E2, 730 Bis-[(ethoxy-ethylthio-phosphorylthio)-methyli-XII/2, 736... 

Icnsaure-dimethylamid)-Anhydrid] El, 465 -benzylester-fluorid-methylester E2, 681 -S-benzylester-S-methylester-S-propylester E2, 650 -bis-[2-brom-propylester]-bromid XII/2, 740 S,S-Bis-[ethoxy-thiocarbonyl]- -O-ethvlester XD/2, 825... 

The methylene group in 3-oxo-2,3-dihydrobenzotellurophene condenses with dimethyl-formamide2, aromatic aldehydes, bis[ethoxy](dimethylamino)methane, and 4-nitroso-A N-dimethylaniline3. 

Butan 1,4-Bis-[mercapto-thiocarbo-nyloxy]- (Dikalium-Salz) IX, 812 Disulfan Bis-[ethoxy-thiocarbonyl]-E4, 434 (RO-CS-SNa/Oxid.)... 

Tellnr Bis-[ethoxy-thiocarbonylthio]-EI2b, 52f. (R-SM + TeX2 bzw. TeX4)... 

Silan Bis-[ethoxy-ethinyl]-dimethyl-E19d, 159 (red. Cl2-Eliminierung/ + R2SiCl2)... 

Dithiokohlensaure -S,S-bis-[ethoxy-th iocarbotiylester]-(ethoxycar-bonylthio-methylimid) E4, 1341... 

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