112894-63-0

Upstream product

• 70-11-1 α-bromoacetophenone 
• 1004-37-1 2,6-dimethyl-pyran-4-thione 
• 5330-72-3 2,6-dimethyl-4-phenacylmercapto-pyrylium; bromide 

Relevant academic research and scientific papers

VINYLOGOUS 4H-PYRONES AND THEIR USE IN PROMOTING PLANT GROWTH

This invention resides in a hitherto unknown class of chemical compounds, 2H-furo[2,3-c]pyran-2-ones including derivatives and analogues thereof. It includes methods for making compounds within said class and includes, without limitation, at least the intermediates employed in the generation of said compounds. The invention also relates to the use of vinylogous 4H-pyrones, including but not limited to the hitherto unknown 2H-furo[2,3-c]pyran-2-ones. In one aspect the invention resides in a method comprising the step of: exposing biological plant material to at least a compound of the invention to promoting bioactivity within said material. In another aspect the invention resides in methods for promoting growth of plant material in, for example, smoke-responsive plant species by exposing said material to a compound of the invention. More specifically, the invention relates to the use of said compounds for promoting seed germination of a plant, for example, a smoke-responsive plant.

SYNTHESES OF VINYLOGOUS 4H-PYRONES FROM 2,6-DIMETHYL-4H-PYRAN-4-THIONE AND ARENYL BROMOMETHYL KETONES

2,6-Dimethyl-4H-pyran-4-ylideneacetophenones (5) were prepared by desulfurization of mercaptopyrilium salts (4) with diazabicycloundecene (DBU) in moderate yield.The 1H NMR spectra in CDCl3 solution of 5 show the exclusive preference for s-cis conf