K*i*s*s*i*n*g

Kirshenbaum, Sheril

doi:10.1016/s0262-4079(09)60453-x

Cited by 2 publications

(3 citation statements)

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“…Our reaction also provides excellent results for epoxides with secondary carbon centers. With Red‐Al, we observed mixtures of 1,3‐ and 1,2‐diols with 17 and 19 (83:17 for 18 and 22:78 for 20 ) …”

Section: Methodsmentioning

confidence: 89%

S_N2 Reactions at Tertiary Carbon Centers in Epoxides

et al. 2017

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Described herein is a novel concept for S 2 reactions at tertiary carbon centers in epoxides without activation of the leaving group. Quantum chemical calculations show why S 2 reactions at tertiary carbon centers are proceeding in these systems. The reaction allows flexible synthesis of 1,3-diol building blocks for natural product synthesis with excellent control of the relative and absolute configurations.

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Section: Methodsmentioning

confidence: 89%

S_N2 Reactions at Tertiary Carbon Centers in Epoxides

et al. 2017

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“…During the extrusion process, sensors collect temperature and pressure data once per second. Based on the pressure data and the measured volume flow data, the shear viscosity of the material under different conditions was obtained after calculation according to equations (1)(2)(3)(4).…”

Section: Materials and Equipment Specification Sourcementioning

confidence: 99%

“…Cellulose acetate (CA) was first synthesized by Paul Schützenberger in 1865 from acetic anhydride-treated wood pulp, and has now developed into a versatile material used for different types of product manufacturing, but initially as a safe substitute for highly flammable nitrocellulose (NC) [1]. In the 1980s, CA was used as an inert binder in low vulnerability ammunition (LOVA) to reduce the sensitivity of ammunition to accidental stimulation [2][3], and a variety of LOVA formulations with CA as a binder were developed over the next few decades [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Comparative study on the rheological properties of cellulose acetate and double‐base propellant

Zhang

et al. 2023

Propellants Explo Pyrotec

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Cellulose acetate (CA) and nitrocellulose (NC) are both cellulose derivatives with similar chemical structure and physical properties, and CA are non‐flammable and biodegradable, so CA has been used as a safe substitute to NC for artillery propellant research. The ester functional groups of CA and NC are different, and there are other components in the propellant, so the rheological properties of CA and propellant can be different slightly. However, the comparative study of rheological properties between CA and propellant is rarely reported. In this paper, the rheological properties of CA and double‐base propellant (DP) in extrusion process was studied by in‐line slit rheometer. The results show that the power‐law model can describe the rheological properties of CA and DP well. The shear viscosity of CA and DP decreases gradually with the increase of solvent ratio, and when the solvent ratio of CA is 0.87 and that of DP is 0.34, the rheological properties of CA and DP are most similar. The Arrhenius equation can reflect the relationship between shear viscosity and temperature of CA and DP, and the viscous activation energy of CA is about 23.68 kJ/mol, while that of DP is about 7.38 kJ/mol. In general, the effect of temperature on the rheological properties of CA is stronger than that of DP.

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Cited by 2 publications

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S_N2 Reactions at Tertiary Carbon Centers in Epoxides

S_N2 Reactions at Tertiary Carbon Centers in Epoxides

Comparative study on the rheological properties of cellulose acetate and double‐base propellant

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K*i*s*s*i*n*g

Cited by 2 publications

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SN2 Reactions at Tertiary Carbon Centers in Epoxides

SN2 Reactions at Tertiary Carbon Centers in Epoxides

Comparative study on the rheological properties of cellulose acetate and double‐base propellant

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S_N2 Reactions at Tertiary Carbon Centers in Epoxides

S_N2 Reactions at Tertiary Carbon Centers in Epoxides