This invention discloses a fluorene polyfunctional photoinitiator as represented by general formula (I), a photosensitive resin composition containing the same, the preparation of the same, and uses of the two. This compound has the advantages of simple synthesis, low cost, and good solubility, and has good application effects in photocurable compositions. Compared with conventional small molecule photoinitiators, it is not only excellent in photoinitiation activity, but also has the advantages such as low mobility, low odor, and yellowing resistance. The composition has high photosensitivity and good developability, high resolution, and excellent adaptation to a substrate, and is very suitable for producing a black matrix having high light-shielding property, a high-precision and high quality color filter and a liquid crystal display device, and can also be used in optical spacers and ribs, photoresist, wet film, dry film and so on.

##STR00001##

The present disclosure provides processes for the preparation of a compound of formula: ##STR00001##
which is useful as an antiviral agent. The disclosure also provides compounds that are synthetic intermediates.

The present disclosure provides processes for the preparation of a compound of formula: ##STR00001##
which is useful as an antiviral agent. The disclosure also provides compounds that are synthetic intermediates.

The present invention refers to a process for the preparation of an -functionalized ketone, an -functionalized ketone obtained by said process, a photopolymerizable composition comprising the -functionalized ketone and at least one photopolymerizable unsaturated compound, a method of preparing an article, an article obtained by said method, as well as the use of the -functionalized ketone or the photopolymerizable composition as photoinitiator.

The present invention refers to a process for the preparation of an -functionalized ketone, an -functionalized ketone obtained by said process, a photopolymerizable composition comprising the -functionalized ketone and at least one photopolymerizable unsaturated compound, a method of preparing an article, an article obtained by said method, as well as the use of the -functionalized ketone or the photopolymerizable composition as photoinitiator.

[Problem] To provide an internal donor component capable of producing, with high productivity, a propylene polymer having extremely high stereoregularity when used mainly as a solid titanium catalyst component.

[Solution] A polyol ester compound having a specific polycyclic structure represented by formula (1). This ester compound is characterized in that sites including a C-R.sup.3 structure and a C-R.sup.4 structure satisfy a specific relationship.

##STR00001##

[Problem] To provide an internal donor component capable of producing, with high productivity, a propylene polymer having extremely high stereoregularity when used mainly as a solid titanium catalyst component.

[Solution] A polyol ester compound having a specific polycyclic structure represented by formula (1). This ester compound is characterized in that sites including a C-R.sup.3 structure and a C-R.sup.4 structure satisfy a specific relationship.

##STR00001##

A process for preparing aryl ketones is disclosed. The process includes photo-oxidizing a compound of formula (V), (VI), (VII) or (VIII): ##STR00001##
in the presence of an oxidative system comprising at least one bromide compound to form aryl ketones. X.sub.1, X.sub.2, R.sub.1, R.sub.2, R.sub.3, L.sub.1, L.sub.2, L.sub.3, L.sub.4, t, n, m and p have the meanings as described in the specification and claims.

A process for preparing aryl ketones is disclosed. The process includes photo-oxidizing a compound of formula (V), (VI), (VII) or (VIII): ##STR00001##
in the presence of an oxidative system comprising at least one bromide compound to form aryl ketones. X.sub.1, X.sub.2, R.sub.1, R.sub.2, R.sub.3, L.sub.1, L.sub.2, L.sub.3, L.sub.4, t, n, m and p have the meanings as described in the specification and claims.

The present disclosure provides processes for the preparation of a compound of formula:

##STR00001##

which is useful as an antiviral agent. The disclosure also provides compounds that are synthetic intermediates.