(E)-3-(2-Chloro-3,3,3-trifluoro­prop-1-en­yl)-2,2-dimethyl-N,N-diphenyl­cyclo­propane­carboxamide

The title compound, C21H19ClF3NO, was synthesized from 3-[(E)-2-chloro-3,3,3-trifluoro­prop-1-en­yl]-2,2-dimethyl­cyclo­propane­carboxylic acid and diphenyl­amine. The propenyl and carboxamide substituents lie on the same side of the cyclo­propane ring plane, with the two methyl substituents on either side of the plane. The phenyl rings of the carboxamide are inclined at an angle of 84.6 (3)° to one another. The F atoms are disordered over two positions; the site occupancy factors are ca 0.6 and 0.4

UCF: Uncovering Common Features for Generalizable Deepfake Detection

Deepfake detection remains a challenging task due to the difficulty of generalizing to new types of forgeries. This problem primarily stems from the overfitting of existing detection methods to forgery-irrelevant features and method-specific patterns. The latter has been rarely studied and not well addressed by previous works. This paper presents a novel approach to address the two types of overfitting issues by uncovering common forgery features. Specifically, we first propose a disentanglement framework that decomposes image information into three distinct components: forgery-irrelevant, method-specific forgery, and common forgery features. To ensure the decoupling of method-specific and common forgery features, a multi-task learning strategy is employed, including a multi-class classification that predicts the category of the forgery method and a binary classification that distinguishes the real from the fake. Additionally, a conditional decoder is designed to utilize forgery features as a condition along with forgery-irrelevant features to generate reconstructed images. Furthermore, a contrastive regularization technique is proposed to encourage the disentanglement of the common and specific forgery features. Ultimately, we only utilize the common forgery features for the purpose of generalizable deepfake detection. Extensive evaluations demonstrate that our framework can perform superior generalization than current state-of-the-art methods

(E)-3-(2-Chloro-3,3,3-trifluoro­prop-1-en­yl)-2,2-dimethyl-N-(2-naphth­yl)cyclo­propane­carboxamide

The title compound, C19H17ClF3NO, was synthesized from 3-[(E)-2-chloro-3,3,3-trifluoro­prop-1-en­yl]-2,2-dimethyl­cyclopropane­carboxylic acid and 2-aminona­phthalene. There are two molecules in the asymmetric unit. The dihedral angle between the naphthalene and cyclo­propane units is 111.6 (5)°. Molecules are connected into chains by intermol­ecular N—H⋯O hydrogen bonds. One of the Cl atoms is disordered over two positions with occupancies 0.653 (15) and 0.347 (15)

(E)-2-(2-Chloro-3,3,3-trifluoro­prop-1-en­yl)-N-(2,4-dimethyl­phen­yl)-3,3-dimethyl­cyclo­propane-1-carboxamide

The title compound, C17H19ClF3NO, crystallizes with three mol­ecules in the asymmetric unit. The aromatic ring makes dihedral angles of 38.69 (13), 46.68 (12) and 50.52 (11)° with the plane of the cyclo­propane ring in the three mol­ecules. The crystal packing is stabilized by inter­molecular N—H⋯O hydrogen bonds

3-[(E)-2-Chloro-3,3,3-trifluoro­prop-1-en-1-yl]-N-(2-chloro­phen­yl)-2,2-dimethyl­cyclo­propane-1-carboxamide

In the title compound, C15H14Cl2F3NO, synthesized by the reaction of 3-[(E)-2-chloro-3,3,3-trifluoro­prop-1-en­yl]-2,2-dimethyl­cyclo­propane­carb­oxy­lic acid and 2-chloro­aniline, the aromatic ring makes a dihedral angle of 76.7 (3)° with the plane of the cyclo­propane ring. In the crystal, inter­molecular N—H⋯O hydrogen bonds link the mol­ecules into chains running along the b axis