3,5-Lutidine

3,5-Lutidine
Names
Preferred IUPAC name
3,5-Dimethylpyridine
Other names
3,5-Lutidine
Identifiers
3D model (JSmol)
105682
ChemSpider
ECHA InfoCard 100.008.827
EC Number
  • 209-708-6
UNII
  • InChI=1S/C7H9N/c1-6-3-7(2)5-8-4-6/h3-5H,1-2H3
    Key: HWWYDZCSSYKIAD-UHFFFAOYSA-N
  • CC1=CC(=CN=C1)C
Properties
C7H9N
Molar mass 107.156 g·mol−1
Appearance oily liquid
Density 0.944 g/cm3
Melting point −6.5 °C (20.3 °F; 266.6 K)
Boiling point 171.9 °C (341.4 °F; 445.0 K)
Acidity (pKa) 6.15
−71.72×10−6 cm3/mol
Hazards
GHS labelling:
Danger
H226, H301, H302, H311, H312, H314, H315, H331, H332, H335
P210, P233, P240, P241, P242, P243, P260, P261, P264, P270, P271, P280, P301+P310, P301+P312, P301+P330+P331, P302+P352, P303+P361+P353, P304+P312, P304+P340, P305+P351+P338, P310, P311, P312, P321, P322, P330, P332+P313, P361, P362, P363, P370+P378, P403+P233, P403+P235, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

3,5-Lutidine is a heterocyclic organic compound with the formula (CH3)2C5H3N. It is one of several dimethyl-substituted derivatives of pyridine, all of which are referred to as lutidines. It is a colorless liquid with mildly basic properties and a pungent odor. The compound is a precursor to the drug omeprazole.

3,5-Lutidine is produced industrially by condensation of acrolein, ammonia, and formaldehyde:

2 CH2=CHCHO + CH2O + NH3 → (CH3)2C5H3N + 2 H2O
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