Jean Morel

A New Convenient Method For Preparation of Condensed Aromatic and Heterocyclic Thiolactones

Abstract Cyclocondensation of the benzylic-type thiols (Ib-VIb) in ortho position on aromatic and heteroaromatic carboxylic acids to form the corresponding thiolactones (Ic-VIc) can be effected with polyphosphate esters (PPE) in organic solvents in 75–90% yields.

19F and 1H NMR study of five-membered ring triflones and related σ -adducts. Long range fluorine-proton spin spin coupling.

Abstract Fluorine and proton chemical shifts for various trifluoromethylsulfonyl thiophene, selenophene, furan and N-methylpyrrole derivatives are reported and compared with those for nitro analogs. The 19F chemical shift of the SO2CF3group is found to be insensitive to its ring position as well as to the nature of the heterocycle. It is also unaffected by the loss of aromaticity and the presence of a negative charge which result from a nucleophilic addition to the ring. In most triflones studied, long range fluorine-proton coupling constants are observed but the proton involved in these couplings depends upon the α or β position of the SO2CF3 group as well as the nature of the ring heteroatom.

Synthesis of Thieno[b]quinolizidines and Hofmann Elimination on Methiodides Derivatives

Abstract Thieno[b]quinolizidines were synthesized by reduction of thieno[b]quinolizidinones and the stereochemistry of their methiodide derivatives was studied. Hofmann degradation of the latter led to thienoazecines.

SYNTH. VON HETEROCYCLISCHEN CYCLOPENTENONEN, ANWENDUNG DER ULLMANN-RK. ZUR DARST. VON CYCLOPENTENONEN IN DER THIOPHEN- UND SELENOPHEN-REIHE

Die aus den Dibromiden (I) erhaltenen Li-Verbindungen (II) reagieren mit dem Selenophen (III) zu den Alkoholen (IV).

MEISENHEIMER‐KOMPLEXE DES 2,6‐DINITRO‐4‐TRIFLUORMETHYLSULFONYL‐ANISOLS

Das Anisol (II) bildet mit Methanolationen in geringer Konzentration in gepufferter Losung vollstandig den Komplex (I).