What is claimed is:
1. A compound of the formula I
11
2. A production method of a compound of the formula I
12
which comprises converting 4-bromofluorobenzene to 4-fluorophenylmagnesium bromide, and reacting the 4-fluorophenylmagnesium bromide with 2,4-dimethylbenzaldehyde.
3. A production method of a compound of the formula II
13
which comprises oxidizing a compound of the formula I
14
4. A production method of 1,3-dimethyl-4-(4-fluorobenzoyl)benzene, which comprises subjecting m-xylene as a starting material and solvent to Friedel-Crafts reaction with 4-fluorobenzoyl halide.
5. A production method of a compound of the formula II
15
which comprises subjecting m-xylene as a starting material and solvent to Friedel-Crafts reaction with 4-fluorobenzoyl halide to give 1,3-dimethyl-4-(4-fluorobenzoyl)benzene and oxidizing said 1,3-dimethyl-4-(4-fluorobenzoyl)benzene.
6. A production method of a compound of the formula II
16
which comprises subjecting 2,4-dimethylbenzoyl halide to Friedel-Crafts reaction with fluorobenzene to give 1,3-dimethyl-4-(4-fluorobenzoyl)benzene and oxidizing said 1,3-dimethyl-4-(4-fluorobenzoyl)benzene.
7. A production method of a compound of the formula II
17
which comprises subjecting trimellitic anhydride to Friedel-Crafts reaction with fluorobenzene in a dichloro-substituted or trichloro-substituted benzene solvent.
8. A production method of a compound of the formula III
18
which comprises subjecting a compound of the formula II
19
to reduction and cyclization.
9. A production method of a compound of the formula III
20
which comprises subjecting trimellitic anhydride to Friedel-Crafts reaction with fluorobenzene to give a mixture of a compound of the formula II
21
and a compound of the formula IV
22
which is an isomer thereof, subjecting the mixture to reduction and cyclization, and isolating the resulting compound.
10. The production method of claim 9, wherein the reaction solvent is dichloro-substituted or trichloro-substituted benzene.
11. The production method of claim 9 or claim 10, wherein the reduction is carried out using sodium borohydride.
12. The production method of claim 9 or claim 10, further comprising the use of a Lewis acid or dialkyl sulfate as a catalyst for the reduction.
13. The production method of claim 12, wherein the catalyst is sulfuric acid, dimethyl sulfate, diethyl sulfate or boron trifluoride.
14. The production method of claim 9 or claim 10, wherein the cyclization is carried out using an acid catalyst.
15. The production method of claim 14, wherein the acid catalyst is an inorganic acid.
16. The production method of claim 15, wherein the inorganic acid is hydrochloric acid, sulfuric acid or phosphoric acid.
17. A production method of a compound of the formula V
23
which comprises oxidizing a compound of the formula III
24
with manganese dioxide.
18. A production method of citalopram represented by the formula A
25
which comprises reacting a compound of the formula VI
26
ps with 3-(dimethylamino)propyl chloride in the presence of a condensing agent and at least one member selected from N,N,N,N-tetramethylethylenediamine and 1,3-dimethyl-2-imidazolidinone.
19. The production method of claim 18, wherein the compound of the formula VI is obtained by subjecting a compound of the formula V
27
successively to oximation and dehydration reaction.
20. The production method of claim 18 or claim 19, wherein the condensing agent is sodium hydride.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
I claim:
1. A pet carrier, comprising:
a bottom;
opposed sides extending from the bottom;
a first end extending from the bottom and the opposed sides and including an opening having a plurality of receptacles positioned around a periphery of the opening;
a second end opposed to the first end and extending from the bottom and the opposed sides;
a top connected to the opposed sides, the first end, and the second end defining an enclosure; and
a door receivable within the opening, the door including a door post having a pair of ends receivable within ones of the receptacles and a mechanism having a rotatable disc and a plurality of bars, each of the plurality of bars having a carrier end receivable within one of the plurality of receptacles and a disc end receivable within the disc, wherein when the disc is rotated, the carrier ends of the plurality of bars either extend toward the plurality of receptacles or retract from the plurality of receptacles.
2. The pet carrier according to claim 1, wherein the bottom includes a raised center portion forming a surface having sloped sides.
3. The pet carrier according to claim 1, further including a plurality of wheels attached to the bottom.
4. The pet carrier according to claim 1, wherein the opposed ends, the first end, and the second end are curved.
5. The pet carrier according to claim 1, wherein the opposed sides include at least one vent.
6. The pet carrier according to claim 5, wherein the vent is constructed of a mesh material.
7. The pet carrier according to claim 6, wherein the mesh material is steel.
8. The pet carrier according to claim 1, wherein the door has ventilation openings.
9. The pet carrier according to claim 1, further including at least one bowl attachable to the door.
10. The pet carrier according to claim 1, further including a leash connector.
11. The pet carrier according to claim 1, wherein the mechanism further includes a cover.
12. The pet carrier according to claim 1, further including a handle connected to the top.
13. The pet carrier according to claim 12, wherein the handle is pivotable.
14. The pet carrier according to claim 13, wherein the top further includes a recess, and the handle is connected to the recess such that when the handle is pivoted to be parallel with the top, the handle lies within the recess.
15. The pet carrier according to claim 1, wherein:
the bottom, the top, the opposed sides, the first end, and the second end are made of plastic, and
the door is constructed of steel.
16. The pet carrier according to claim 1, further including:
a first section including the bottom, a portion each of the opposed sides, the first end, and the second end, and a lip having a plurality of apertures;
a second section including the top, remaining portions of the opposed sides, the first end, and the second end, and a lip having a plurality of apertures; and
a plurality of fasteners, each of the plurality of fasteners insertable into one of the plurality of apertures.
17. The pet carrier according to claim 16, wherein:
each of the plurality of apertures has a slot,
each of the plurality of fasteners has a head, a post, and a foot, the post includes a tab,
the foot and post are insertable within one of the plurality of apertures, and
after the fastener has been twisted, the foot cannot be withdrawn from the one of the plurality of apertures, and the tab engages the slot in the one of the plurality of apertures to hold the fastener captive in the one of the plurality of apertures.