Assertion: pyridine | /r/HasProperty | produced
Facets:
value: mainly
type: DEGREE
value: nowadays
type: TEMPORAL
value: from coal tar
type: LOCATION
value: historically
type: TEMPORAL
Source sentences:
text: Historically, pyridine was produced from coal tar.
text: Nowadays, most pyridine is produced synthetically using various name reactions, and the major ones are discussed below.
text: Pyridine can be integrated from ammonia, formaldehyde, and acetaldehyde, or it tends to be produced using unrefined coal tar.
text: 3-monochloromethyl pyridine is mainly produced and then, the production of 3-dichloromethyl pyridine is increased and then the production of 2-chloro-5-dichloromethyl pyridine, 2-chloro-3-dichloromethyl pyridine, and 3-trichloromethyl pyridine is increased and finally the production of 2-chloro-5-trichloromethyl pyridine as the object compound is increased.