147377-67-1Relevant academic research and scientific papers
Squaramide-catalyzed asymmetric intramolecular oxa-michael reaction of α,β-unsaturated carbonyls containing benzyl alcohol: Construction of chiral 1-substituted phthalans
Son, Eun Chae,Kim, Seung Yeon,Kim, Sung-Gon
, p. 6826 - 6839 (2021/05/29)
Organocatalytic enantioselective intramolecular oxa-Michael reactions of benzyl alcohol bearing α,β-unsaturated carbonyls as Michael acceptors are presented herein. Using cinchona squaramide-based organocatalyst, enones as well as α,βunsaturated esters containing benzyl alcohol provided their corresponding 1,3-dihydroisobenzofuranyl-1-methylene ketones and 1,3-dihydroisobenzofuranyl-1-methylene esters in excellent yields with high enantioselectivities. In addition, enantioenriched 1,3-dihydroisobenzofuranyl-1-methylene ketone could be obtained from the Wittig/oxa-Michael reaction cascade of 1,3-dihydro-2-benzofuran-1-ol.
Efficient synthesis of polysubstituted isochromanones via a novel photochemical rearrangement
Xia, Wujiong,Shao, Yutian,Gui, Weijun,Yang, Chao
, p. 11098 - 11100 (2011/11/06)
A novel and convenient approach to the synthesis of polysubstituted isochromanones is described. Irradiation of 2-formyl phenylalkeno-derivatives with UV light in benzene solution afforded the corresponding products in up to 98% yield. The possible reaction mechanism is proposed and further supported by the isotopic experiments.
New Synthetic Strategy for the Construction of the BCD Ring System of Tanshinones
Shishido, Kozo,Takata, Takeshi,Omodani, Tomoki,Shibuya, Masayuki
, p. 557 - 560 (2007/10/02)
Employing a strategy for the construction of fused furans based on an intramolecular dipolar cycloaddition reaction of nitrile oxide, the BCD ring system 3 found in the tanshinone family as a common structural unit has been synthesized.
A General Synthetic Route to Fused Furans. Total Synthesis of (+)-Pallescensin A
Shishido, Kozo,Umimoto, Koji,Ouchi, Mikiko,Irie, Osamu,Omodani, Tomoki,et al.
, p. 328 - 375 (2007/10/02)
A general and facile synthetic route to fused furans has been developed.The key step of the transformation involves the intramolecular dipolar cycloaddition reaction of the nitrile oxides, 2 and 2', which were generated in situ from the correspondin
