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Obituary
Yoshito Kishi (1937-2023)
Yoshito Kishi (1937-2023)
Professor. Yoshito Kishi,
a member of the Honorary Editorial Associates of HETEROCYCLES,
has passed away on January 9, 2023 at the age of 85.
I deeply express my regret over his death.
Kunio Ogasawara
Editor
January 13, 2023
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Short Paper | Regular issue | Vol 98, No. 11, 2019, pp.1555-1562
Published online, 30th October, 2019
Published online, 30th October, 2019
DOI: 10.3987/COM-19-14166
■ Facile Synthesis of (Guaiazulen-1-yl)-1H-pyrroles via Paal-Knorr Reaction
Lu Zhang, Dao-Lin Wang,* Jin-Juan Xing, and Lin Liu
*College of Chemistry and Chemical Engineering, Bohai University, 19, Keji Rd., New Songshan District, Jinzhou City, Liaoning Province 121001, China
Abstract
An efficient and simple method for the synthesis of (guaiazulen-1-yl)-1H-pyrroles was described. The construction of this new heteroarylazulene system was achieved by a the Paal-Knorr reaction of 3-acetyl-4-(guaiazulen-1-yl)hexane- 2,5-dione (4), easily preparation by a three-component condensation of guaiazulene (1), methylglyoxal (2) and acetylacetone (3), with primary amines (5).
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