In various aspects and embodiments the invention provides a method of preparing a cyclopentaoxasilinone, the method comprising contacting a siloxy-tethered 1,7-enyne with a thioether promoter. In another aspect, the invention provides a method of preparing a cyclopentaoxaborininone, the method comprising contacting a boronic ester-tethered 1,7-enyne with a thioether promoter.

In various aspects and embodiments the invention provides a method of preparing a cyclopentaoxasilinone, the method comprising contacting a siloxy-tethered 1,7-enyne with a thioether promoter. In another aspect, the invention provides a method of preparing a cyclopentaoxaborininone, the method comprising contacting a boronic ester-tethered 1,7-enyne with a thioether promoter.

Fluids incorporated into intraocular lenses and their methods of use. In some embodiments the fluids are silicone oils, and in some embodiments they are used in accommodating intraocular lenses.

Fluids incorporated into intraocular lenses and their methods of use. In some embodiments the fluids are silicone oils, and in some embodiments they are used in accommodating intraocular lenses.

Aminopropylalkoxysilanes of the formula
H.sub.2N—CR.sup.2R.sup.3—CHR.sup.1—CH.sub.2—SiR.sup.4R.sup.5(OR.sup.6)  I,
are synthesized by hydrosilylating silazanes of the formulae ##STR00001##
and mixtures thereof, in the presence of a catalyst containing rhodium and/or iridium compounds, and then reacted with alcohol to form an aminopropylalkoxysilane.

Aminopropylalkoxysilanes of the formula
H.sub.2N—CR.sup.2R.sup.3—CHR.sup.1—CH.sub.2—SiR.sup.4R.sup.5(OR.sup.6)  I,
are synthesized by hydrosilylating silazanes of the formulae ##STR00001##
and mixtures thereof, in the presence of a catalyst containing rhodium and/or iridium compounds, and then reacted with alcohol to form an aminopropylalkoxysilane.

An aqueous composition contains N-benzyl-substituted N-(2-aminoethyl)-3-aminopropylsiloxane hydrochlorides, wherein the composition after storage for 6 weeks at 60° C. has a color number of ≤1 Gardner, a content of methanol of ≤0.5% by weight, an active substance content of ≤60% by weight, and a content of water of ≥40% to ≤60% by weight, and wherein the components in the composition sum to 100% by weight.

An aqueous composition contains N-benzyl-substituted N-(2-aminoethyl)-3-aminopropylsiloxane hydrochlorides, wherein the composition after storage for 6 weeks at 60° C. has a color number of ≤1 Gardner, a content of methanol of ≤0.5% by weight, an active substance content of ≤60% by weight, and a content of water of ≥40% to ≤60% by weight, and wherein the components in the composition sum to 100% by weight.

Fluids incorporated into intraocular lenses and their methods of use. In some embodiments the fluids are silicone oils, and in some embodiments they are used in accommodating intraocular lenses.

Fluids incorporated into intraocular lenses and their methods of use. In some embodiments the fluids are silicone oils, and in some embodiments they are used in accommodating intraocular lenses.