Which of the following compounds has the most | vedclass

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(B) The acidity of a compound is determined by the stability of its conjugate base. When the hydrogen atom attached to the central carbon is removed,a

Vedclass · Accepted Answer

$2-$phenyl$-1,3-$dithiolane

Vedclass · Answer

(B) The acidity of a compound is determined by the stability of its conjugate base. When the hydrogen atom attached to the central carbon is removed,a carbanion is formed. In $2-$phenyl$-1,3-$dithiolane,the resulting carbanion is stabilized by: $1$. Resonance with the phenyl ring. $2$. The presence of sulfur atoms,which have empty $3d$ orbitals that can accommodate the negative charge through $p\pi-d\pi$ back-bonding (often referred to as $d$-orbital resonance). Sulfur is more effective at stabilizing the adjacent negative charge compared to oxygen (which is more electronegative but lacks low-lying $d$-orbitals) or nitrogen (which is less electronegative and has no $d$-orbitals). Therefore,$2$-phenyl$-1,3-$dithiolane has the most acidic hydrogen.

Which of the following compounds has the most acidic hydrogen?

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