Strategies for Expanding Structural Diversity Available from Olefin Isomerization−Claisen Rearrangement Reactions
作者:Benjamin D. Stevens、Christopher J. Bungard、Scott G. Nelson
DOI:10.1021/jo0605851
日期:2006.8.1
for expanding the structural diversity available from olefin isomerization−Claisen rearrangement (ICR) reactions. Easily prepared allyl propargyl ethers undergo chemoselective Zr(IV)-catalyzed hydroboration to afford the boron-substituted ICR substrates. The boron-substituted allyl residue undergoes chemoselective Ir(I)-catalyzed olefinisomerization and in situ Claisen rearrangement to afford stereodefined
Pyrrole compound, method of making same, and aroma composition, food, drink and cosmetics containing same
申请人:T. HASEGAWA CO., LTD.
公开号:US11332694B2
公开(公告)日:2022-05-17
A compound represented by the following formula (1):
wherein, R1 is a linear or branched alkyl group having 1 to 3 carbon atoms or a hydroxyl group; and R2 is a 1-pyrrolyl group, a 2-pyrrolyl group, or a 3-pyrrolyl group. The present invention can provide a means highly effective in contributing to savory roasting flavor and capable of imparting fragrance with natural feeling.
PYRROLE COMPOUND, AROMA COMPOSITION, AND FOOD AND DRINK AND COSMETICS CONTAINING THE SAME
申请人:T. HASEGAWA CO., LTD.
公开号:US20200157463A1
公开(公告)日:2020-05-21
A compound represented by the following formula (1):
wherein, R
1
is a linear or branched alkyl group having 1 to 3 carbon atoms or a hydroxyl group; and R
2
is a 1-pyrrolyl group, a 2-pyrrolyl group, or a 3-pyrrolyl group. The present invention can provide a means highly effective in contributing to savory roasting flavor and capable of imparting fragrance with natural feeling.