Carbon-13 NMR identification of cyclic ethyleneureas important in cellulosic textile finishing

Hermanns, K.; Meyer, Bettina Elizabeth; Andrews, B.A. Kottes

doi:10.1021/i300023a018

Cited by 4 publications

(1 citation statement)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…NMR Data. Although the chemistry of the cyclic ureas has been given much attention, there are only limited spectral data available (Hermanns et al, 1986). Thus, we will present hereto and 13C NMR chemical shifts for 2c-e, 3f, and 3g, and their melting points and characteristic IR bands are separately shown in Table I.…”

Section: Methodsmentioning

confidence: 99%

Preparation of cyclic ureas from carbon dioxide and diamines catalyzed by triphenylstibine oxide

Nomura¹,

Yamamoto²,

Matsuda³

1987

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

Triphenylstibine oxide, Ph3SbO, could catalyze the direct carbonylation of diamines (1, H2N-(CH2)"NHR; where n, R = 2, CH3, a; 3, CH3, b; 2, CH2CH2OH, c; 2, CH2CH(CH3)OH, d; 3, CH2-CH(CH3)OH, e), affording cyclic ureas of fiveor six-membered ring in cooperation with molecular sieves 3A. Thus, la-e were converted into the corresponding cyclic ureas in 85-98% yields at 150-160 °C without any polymeric byproduct. Cyclocondensation occurred at amino alcoholic portions in the reactions of N-(hydroxypropyl)tetramethylene-and N-(hydroxypropyl)hexamethylenediamines (If and lg), and iV-(aminoalkyl)-substituted oxazolidinones were obtained.Cyclic urea derivatives (2-imidazolidinones and tetrahydro-2(1 H)-pyrimidinones), especially N-alkylor N-(hydroxyalkyl)-substituted ones, are useful materials as intermediates for the syntheses of medicines (Ebetino, 1966;Snyder, 1974; Sherlock, 1983) and resins (Walles and

show abstract

Section: Methodsmentioning

confidence: 99%

Preparation of cyclic ureas from carbon dioxide and diamines catalyzed by triphenylstibine oxide

Nomura¹,

Yamamoto²,

Matsuda³

1987

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

show abstract

Evaluation of some side effects from the use of formaldehyde scavengers

Vail

Beck

1990

J of Applied Polymer Sci

View full text Add to dashboard Cite

SynopsisConcentrations of methylol carbamates in several crosslinking formulations prepared from methyl carbamate and formaldehyde and with and without urea or ethyleneurea as scavengers were determined by nuclear magnetic resonance spectroscopy. The scavengers were effective in reducing the free formaldehyde in the solution, but the dimethylol methyl carbamate concentration was reduced by about 25%. Selected chemical and physical properties were obtained from cotton fabrics finished with five different formulations of known composition. Fabric strengths were improved by use of a scavenger, but some undesirable side effects were observed.

show abstract

1,3,-Dioxolane, An Alternative to Formalin as a Standard for Formaldehyde

Andrews

1987

Textile Research Journal

View full text Add to dashboard Cite

Four potential primary standards for formaldehyde were evaluated as replacements for the formalin usually used with colorimetric reagents in analyzing textiles for form aldehyde. Of the four—sodium formaldehyde bisulfite, hexamethylenetetramine, tet raoxane, and 1,3,—dioxolane—only 1,3,-dioxolane yielded the stoichiometric amount of formaldehyde under relatively mild conditions of hydrolysis. 1,3,-Dioxolane can be hydrolyzed in 6N HCl for four hours to produce one mole of formaldehyde per mole of 1,3,-dioxolane. Stabilities of standard formaldehyde solutions from 1,3,-diox olane were compared with those from formalin, and there is a discussion of 1,3, dioxolane-based formaldehyde solutions used to prepare calibration curves of several colorimetric reagents for formaldehyde.

show abstract

Carbon-13 NMR identification of cyclic ethyleneureas important in cellulosic textile finishing

Cited by 4 publications

References 9 publications

Preparation of cyclic ureas from carbon dioxide and diamines catalyzed by triphenylstibine oxide

Preparation of cyclic ureas from carbon dioxide and diamines catalyzed by triphenylstibine oxide

Evaluation of some side effects from the use of formaldehyde scavengers

1,3,-Dioxolane, An Alternative to Formalin as a Standard for Formaldehyde

Contact Info

Product

Resources

About