I found the field of Chemistry very interesting. Saw the article Understanding the Reactivity of Group 6 Metal (M = Cr, W) Alkynyl Fischer Carbene Complexes with Multi-Reactive Masked Dienes published in 2019. Formula: C14H10O, Reprint Addresses Gomez-Gallego, M; Sierra, MA (corresponding author), Univ Complutense, Fac Quim, Dept Quim Organ 1, Ctr Invest Quim Avanzada ORFEO CINQA, E-28040 Madrid, Spain.. The CAS is 90-44-8. Through research, I have a further understanding and discovery of Anthrone
Group 6 alkynyl Fischer carbene complexes behave as electrophiles with highly reactive masked dienes such as anthrone and 3-hydroxy-2-pyrone, which also can react as bidentate nucleophiles. Both Cr-0 and W-0 alkynyl carbene complexes require tertiary amines to promote the formation of 1,4-C-addition products, but a marked dependence of the reactivity on the metal was observed. Although W-0 complexes form exclusively the 1,4-C-adducts in the presence of a catalytic amount of base, Cr-0 complexes lead to new anthrone-derived bis-carbene complexes, obtained by a sequential 1,4-C- and 1,4-O-addition process with high diastereoselectivity and only in the presence of an excess of base. DFT computational studies show that the gap between the LUMO of the complex and the HOMO of the anthrone determines the differences in reactivity and that the stability of the intermediate metal allenyls formed after the initial 1,4-addition is decisive for the outcome of the reaction.
Welcome to talk about 90-44-8, If you have any questions, you can contact Collado, A; Gomez-Gallego, M; Santiago, A; Sierra, MA or send Email.. Formula: C14H10O
Reference:
Thiomorpholine – Wikipedia,
,Thiomorpholine | C4H9NS – PubChem