(R)-(-)-2,2-Dimethyl-4-(hydroxymethyl)-1,3-dioxolane-p-toluenesulfonate CAS No.23788-74-1 / Cat No.EBD51889
(R)-(-)-对甲基苯磺酸-2,2-二甲基-1,3-二氧戊环基-4-甲酯
(R)-(-)-对甲基苯磺酸-2,2-二甲基-1,3-二氧戊环基-4-甲酯
(R)-2,2-二甲基-1,3-二氧戊环基-4-甲基苯磺酸甲酯
(R)-(-)-2,2-二甲基-1,3-二氧戊环基-4-基甲基对甲苯磺酸酯
Properties
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Appearance:
clear yellow to light brown viscous liquid
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Density:
1.208 g/mL at 25 °C(lit.)
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Melting point:
41-43 °C(lit.)
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Boiling point:
400.089 °C at 760 mmHg
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Flashing point:
113 °C
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Storage temperature:
−20°C
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Coefficient of refraction:
n20/D 1.506(lit.)
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Vapour pressure:
0mmHg at 25°C
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Optical rotation:
[α]/D −7.0±0.5°, neat
Safety Information
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Symbol:
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Signal words:
Warning -
Hazard statements:
H315 Causes skin irritation.
H319 Causes serious eye irritation.
H335 May cause respiratory irritation.
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Precautionary statements:
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
NMR Spectrum
Prediction： NMR (600 MHz, CDC13, 25 掳C) delta (ppm): 1.31 (s, 3H, CH3-2), 1.34 (s, 3H, CH3-2), 2.45 (s, 3H, ArCH3), 3.76 (dd, J = 5.1 and 8.8 Hz, 1H, one of the CH2-5 group), 3.98 (dd, J = 6.0 and 10.2 Hz, 1H, one of the CH2-1 group), 4.01 (dd, J = 5.6 and 10.3 Hz, 1H, one of the CH2-1 group), 4.03 (dd, J = 6.2 and 8.8 Hz, 1H, one of the CH2-5 group), 4.28 (m, 1H, CH-4), 7.35 (m, 2H, aromatic H-3 and H-5), 7.79 (m, 2H, aromatic H-2 and H-6).
1H NMR
13C NMR
